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COLLABORATION AGREEMENT

Collaboration Agreement

COLLABORATION AGREEMENT
 | Document Parties: PFIZER INC | EYETECH PHARMACEUTICALS, INC. You are currently viewing:
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PFIZER INC | EYETECH PHARMACEUTICALS, INC.

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Title: COLLABORATION AGREEMENT
Governing Law: New York     Date: 3/16/2006
Industry: Biotechnology and Drugs     Law Firm: Hale and Dorr LLP    

COLLABORATION AGREEMENT
, Parties: pfizer inc , eyetech pharmaceuticals  inc.
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                                                                   EXHIBIT 10.52

          CONFIDENTIAL MATERIALS OMITTED AND FILED SEPARATELY WITH THE
         SECURITIES AND EXCHANGE COMMISSION. ASTERISKS DENOTE OMISSIONS.

                              COLLABORATION AGREEMENT

                                 BY AND BETWEEN

                                   PFIZER INC.

                                       AND

                          EYETECH PHARMACEUTICALS, INC.

                           DATED AS OF DECEMBER 17, 2002

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                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                  PAGE
                                                                                                                   ----
<S>                                                                                                                <C>
ARTICLE 1 DEFINITIONS.........................................................................................        2

ARTICLE 2 CO-PROMOTION OF PRODUCTS IN THE US TERRITORY........................................................       18

     2.1   Co-Promotion........................................................................................       18
     2.2   License Grants......................................................................................       18
     2.3   Compliance With Law.................................................................................       18
     2.4   Detailing Obligations...............................................................................       18
     2.5   Training............................................................................................       18
     2.6   Promotional Materials and Call Center Communications................................................       20
     2.7   Samples.............................................................................................       20
     2.8   Distribution and Booking of Sales...................................................................       21
     2.9   Contract Sales Forces...............................................................................       21
     2.10   Delivery Technology Development Agreement..........................................................       21

ARTICLE 3 MANAGEMENT OF ALLIANCE..............................................................................       22

     3.1   Committee/Subcommittees.............................................................................       22
     3.2   Meetings............................................................................................       22
     3.3   Clinical Development/Regulatory Subcommittee........................................................       23
     3.4   Commercialization Subcommittee......................................................................       26
     3.5   Manufacturing Subcommittee..........................................................................       27
     3.6   Joint Operating Committee...........................................................................       29
     3.7   Deadlocks...........................................................................................       30
     3.8   Limitation on Decision-Making Authority.............................................................       30

ARTICLE 4 CLINICAL AND REGULATORY MATTERS.....................................................................       31

     4.1   Clinical and Regulatory Matters in the US Territory.................................................       31
     4.2   Clinical and Regulatory Matters in the ROW Territory................................................       33
      4.3   Inquiries, Adverse Events, etc. ....................................................................       35
     4.4   Pfizer's Performance of Regulatory Services Agreement Obligations...................................       36

ARTICLE 5 PRODUCT DEVELOPMENT.................................................................................       37

     5.1   Development Plan and Budget.........................................................................       37
     5.2   AMD Product and DME Product Development.............................................................       38
     5.3   Development of Products for Additional Indications in the Field.....................................       38

ARTICLE 6   LAUNCH, CO-PROMOTION AND DETAILING.................................................................       39

     6.1   Co-Promotion of Products............................................................................       39
     6.2   Marketing Plan and Budget...........................................................................       39
     6.3   Detailing...........................................................................................       40
     6.4   Detailing Reports...................................................................................       40
     6.5   Detail Shortfalls...................................................................................       41
</TABLE>

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<TABLE>
<S>                                                                                                                 <C>
     6.6   Sales Force Responsibilities........................................................................       44
     6.7   Product Information.................................................................................       45
     6.8   Orders..............................................................................................       45
     6.9   Audit...............................................................................................       45
     6.10   Third Party Reports................................................................................       45
     6.11   Medical Claims.....................................................................................       45
     6.12   Manufacturing......................................................................................       46
     6.13   Customer Support...................................................................................       50

ARTICLE 7 PAYMENT PROVISIONS..................................................................................       50

     7.1   Payment Currency....................................................................................       50
     7.2   Payments............................................................................................       50

ARTICLE 8 EXPENSE SHARING AND COMPENSATION....................................................................       51

     8.1   Sharing of Development Costs........................................................................       51
     8.2   Responsibility for Regulatory Costs.................................................................       53
     8.3   Responsibility for Cost of Goods Sold...............................................................       53
     8.4   Responsibility for Marketing Expenses...............................................................       54
     8.5   Net Sales Reports...................................................................................       54
     8.6   Quarterly Reconciliation of Net Sales and Expenses..................................................       54
     8.7   Offset..............................................................................................       56

ARTICLE 9 ACCOUNTING AND REPORTS..............................................................................       56

     9.1   Books and Records...................................................................................       56
     9.2   Audits..............................................................................................       56
     9.3   Sales Force Efforts.................................................................................       57

ARTICLE 10   INTELLECTUAL PROPERTY RIGHTS AND LABELING.........................................................       58

     10.1   Trademark and Corporate Logos......................................................................       58
     10.2   Copyrights and Proprietary Programs................................................................       61
     10.3   Developments.......................................................................................       62
     10.4   Third Party Agreements.............................................................................       62

ARTICLE 11   CONFIDENTIAL INFORMATION..........................................................................       63

     11.1   Treatment of Confidential Information..............................................................       63
     11.2   Confidential Information...........................................................................       64

ARTICLE 12   REPRESENTATIONS, WARRANTIES AND INDEMNIFICATION...................................................       65

     12.1   Eyetech's Representations..........................................................................       65
     12.2   Pfizer's Representations...........................................................................       66
     12.3   No Warranties......................................................................................       67
     12.4   General Indemnification in Favor of Pfizer.........................................................       67
     12.5   General Indemnification in Favor of Eyetech........................................................       68
     12.6   Product Liability and Intellectual Property Infringement Indemnification...........................        69
     12.7   "Losses"...........................................................................................       72
     12.8   No Consequential or Punitive Damages...............................................................       73
     12.9   General Indemnification Procedures.................................................................       73
</TABLE>

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<TABLE>
<S>                                                                                                                 <C>
ARTICLE 13   TERM AND TERMINATION..............................................................................       77

     13.1   Term...............................................................................................       77
     13.2   Termination for Breach.............................................................................       77
     13.3   HSR Denial.........................................................................................        79
     13.4   Detail Shortfalls..................................................................................       79
     13.5   Breach of Non-Competition Obligations..............................................................       80
     13.6   Changes of Control.................................................................................       80
     13.7   Termination of License Agreement...................................................................       80
     13.8   Sales Threshold Termination........................................................................       81
     13.9   Survival of Obligations............................................................................       81

ARTICLE 14   NON-COMPETITION; DETAILING SERVICES AGREEMENT.....................................................       84

     14.1   Non-Competition....................................................................................       84
     14.2   Acquisitions Involving Competing Products..........................................................       86
     14.3   Detailing Services Agreement; Additional Agreements................................................       87

ARTICLE 15   DISPUTE RESOLUTION................................................................................       88

     15.1   Arbitration........................................................................................       88
     15.2   No Limitation......................................................................................       89

ARTICLE 16   HSR MATTERS.......................................................................................       90

     16.1   HSR Filings........................................................................................        90
     16.2   HSR Cooperation; Further Assurances................................................................       90
     16.3   Activities Prior to the Effective Date.............................................................       91

ARTICLE 17 MISCELLANEOUS......................................................................................       91

     17.1   Governing Law......................................................................................       91
     17.2   Jurisdiction.......................................................................................       91
     17.3   Waiver.............................................................................................       91
     17.4   Notices............................................................................................       92
     17.5   Entire Agreement...................................................................................       93
     17.6   Headings...........................................................................................       93
     17.7   Severability.......................................................................................       93
     17.8   Registration and Filing of the Agreement...........................................................       94
     17.9   Assignment.........................................................................................       94
     17.10 Successors and Assigns.............................................................................       94
     17.11 Divestiture by Pfizer..............................................................................       95
     17.12 Counterparts.......................................................................................       96
      17.13 Force Majeure......................................................................................       96
     17.14 Non-Solicitation of Employees......................................................................       97
     17.15   Press Releases and Other Disclosures..............................................................       97
     17.16   Third-Party Beneficiaries.........................................................................       98
     17.17   Relationship of the Parties.......................................................................       98
     17.18   Performance and Compliance by Affiliates..........................................................      100
</TABLE>


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<TABLE>
<S>                                  <C>
EXHIBIT 1.20                -         Group/Joint Details
EXHIBIT 1.52                -         Call Center Costs
EXHIBIT 2.5                 -         Sales Force Training Program
EXHIBIT 3.4(d)               -         Matters where Eyetech Possesses Special Expertise
                                    or has Special Relationships
EXHIBIT 3.4(e)              -         Initially Planned Phase III(b)/IV Product Studies
EXHIBIT 5.1(a)              -         Development Programs for the AMD Product and the DME
                                    Product
EXHIBIT 5.1(b)              -         AMD Agreed Development Costs and the DME Agreed
                                    Development Costs
EXHIBIT 6.2                 -         Marketing Budgets and Detailing Requirements
EXHIBIT 6.12(a)             -         Pre-Existing Clinical Supply Agreements
EXHIBIT 10.4                -         Third Party Agreements
EXHIBIT 12.6(a)(iii)        -         Certain Product Liability Matters
EXHIBIT 12.6(b)(iii)(A)     -         Eyetech 2002 Clinical Supply Costs
EXHIBIT 12.6(b)(iii)(B)     -         Certain Third Party Intellectual Property
EXHIBIT 17.15               -         Joint Press Release
EXHIBIT 17.15(c)            -         Permitted Disclosures
</TABLE>


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                             COLLABORATION AGREEMENT

         THIS COLLABORATION AGREEMENT dated as of December 17, 2002 (the
"Execution Date"), between Pfizer Inc. ("Pfizer"), a corporation organized under
the laws of the State of Delaware, having a business address at 235 East 42nd
Street, New York, New York 10017-5755, and Eyetech Pharmaceuticals, Inc.
("Eyetech"), a corporation organized under the laws of the State of Delaware,
having a business address at 500 Seventh Avenue, 18th Floor, New York, New York
10018.

         WHEREAS, the Parties have executed the Other Product-Related Agreements
(as defined below) with respect to the aptamer known as Macugen;

         WHEREAS, the Parties have also executed the Equity Agreements (as
defined below) with respect to purchases of shares of Eyetech capital stock that
have been and/or will be made from Eyetech by Pfizer, Pfizer Ireland
Pharmaceuticals, a Pfizer Affiliate organized under the laws of the Republic of
Ireland ("Pfizer Ireland"), and/or another Pfizer Affiliate designated by
Pfizer;

         WHEREAS, the Parties have also executed the Detailing Services
Agreement (as defined below); and

         WHEREAS, the Parties would like to set forth the terms and conditions
pursuant to which they will collaborate in connection with the worldwide
development and commercialization of products containing or based on the Macugen
aptamer and with respect to certain other matters as described in this Agreement
and in the Other Product-Related Agreements.

         NOW, THEREFORE, the Parties agree as follows:

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                                    ARTICLE 1

                                   DEFINITIONS

         The following terms, whether used in the singular or plural, shall have
the following meanings:

         1.1       "Act" means both the United States Food, Drug and Cosmetic
Act, as amended, and the regulations promulgated under the foregoing.

         1.2       "Affiliate" means any Person directly or indirectly controlled
by, controlling or under common control with, a Party, but only for so long as
such control shall continue. For purposes of this definition, "control"
(including, with correlative meanings, "controlled by", "controlling" and "under
common control with") means, with respect to a Person, possession, direct or
indirect, of (a) the power to direct or cause direction of the management and
policies of such Person (whether through ownership of securities or partnership
or other ownership interests, by contract or otherwise), or (b) at least 50% of
the voting securities (whether directly or pursuant to any option, warrant or
other similar arrangement) or other comparable equity interests. For the
avoidance of doubt, neither of the Parties shall be deemed to be an "Affiliate"
of the other.

         1.3       "AMD Product" means a Product developed for use in the
treatment of age-related macular degeneration.

         1.4       "API Bulk Drug Substance Supplier" means a third-party
supplier of active pharmaceutical ingredient bulk drug substance for Products
with which Eyetech or Pfizer enters into a supply agreement pursuant to Section
6.12.

         1.5       "Approval" means receipt from FDA of approval to market a drug
product in the US Territory.

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         1.6       "Bankruptcy Code" means 11 USC Sections 101-1330, as amended.

         1.7       "beneficial ownership" (and other correlative terms) by a
Person means, with respect to any security: (a) such Person or any of such
Person's Affiliates directly or indirectly owns such security; (b) such Person
or any of such Person's Affiliates has the right to acquire such security
(whether such right is exercisable immediately or only after the passage of
time) pursuant to any agreement, arrangement or understanding (whether or not in
writing) or upon the exercise of conversion rights, exchange rights, rights,
warrants or options, or otherwise; or (c) ownership, direct or indirect, by any
other Person with which such Person or any of such Person's Affiliates has any
agreement, arrangement or understanding for the purpose of acquiring, holding,
voting or disposing of such security; provided, however, that a Person shall not
be deemed to have beneficial ownership of any security by virtue of an
agreement, arrangement or understanding to vote such security that arises solely
from a revocable proxy or consent given to such Person in response to a public
proxy or consent solicitation made pursuant to, and in accordance with, the
applicable rules and regulations of the Securities Exchange Act of 1934, as
amended.

         1.8       "Business Day" means a day that is not a Saturday, Sunday or a
day on which banking institutions in New York, New York are authorized by Law to
remain closed.

         1.9       "Call Center" means the call center to be established by
Pfizer and substantially dedicated to receiving and answering Product-related
inquiries and complaints from or on behalf of, as applicable, Product-users,
physicians, managed care organizations, and others residing in the US Territory.

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         1.10      "Change in Control" means, with respect to a Party, an event
where:

                   (a)       any Person or group of Persons (as the term "group"
is interpreted pursuant to Rule 13d-5 under the Securities Exchange Act of 1934,
as amended) acquires beneficial ownership of capital stock of the Party (other
than (x) directly from such Party or (y) from underwriter(s) of such Party's
capital stock in a public offering) entitling the holder(s) thereof to at least
a majority of the voting power of the then outstanding capital stock of such
Party with respect to the election of directors of such Party, or

                  (b)       the Party enters into a merger, consolidation,
reorganization or similar transaction with another Person (the "Acquiring
Corporation") in which less than a majority of the voting power of the
outstanding capital stock of such Party (if it is the surviving entity) or of
the Acquiring Corporation (if it is the surviving entity) with respect to the
election of directors following such transaction is held by Persons who were
shareholders of such Party immediately prior to such transaction, or

                  (c)       the Party sells to any Person(s) in one or more
related transactions properties or assets representing all or substantially all
of the properties and assets of such Party.

         1.11      "CMC" means the chemistry, manufacturing and controls section
of the Product NDA.

         1.12      "Code" or "Codes" means the Code on Interactions with
Healthcare Professionals promulgated by the Pharmaceutical Research and
Manufacturers of America (PhRMA), the American Medical Association Guidelines on
Gifts to Physicians, and the PhRMA Principles on Conduct of Clinical Trials and
Communication of Clinical Trial Results, as any of the foregoing may be amended.

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          1.13      "Commercially Reasonable Efforts" means, with respect to a
Product, commercially reasonable efforts, which in no event will be less than
the efforts the Party required to make such efforts generally uses (as
applicable in the context used in this Agreement) in developing, seeking
Approvals, manufacturing, promoting, detailing and marketing its other
pharmaceutical products (if any) that are comparable to such Product, taking
into account product labeling or anticipated labeling, market potential, past
performance (if any), economic return potential, medical and clinical
considerations, the regulatory environment, and competitive market conditions in
the therapeutic area, all as measured by the facts and circumstances at the time
such efforts are due.

         1.14      "Competing Product" means [**].

         1.15      "Consumer Price Index" or "CPI" means the Consumer Price Index
- Urban Wage Earners and Clerical Workers, U.S. City Average, All Items, 1982-84
= 100, published by the United States Department of Labor, Bureau of Statistics
(or its successor equivalent index).

         1.16      "Co-Promotion" means the joint marketing and promotion
(including without limitation Detailing) of the Products in the US Territory as
described in Article 6. "Co-Promote" when used as a verb shall mean to engage in
the activities described in Article 6.

         1.17      "Co-Promotion Budget" is defined in Section 6.2.

         1.18      "Co-Promotion Term" means the period from the Effective Date
until the later of (a) the expiration of the last to expire Valid Claim (as such
term is defined in the License Agreement) in the United States of America and
(b) 15 years after Launch of the last Product in the US Territory, unless sooner
terminated as provided in this Agreement.

         1.19      "Cost of Goods Sold" means Manufacturing Costs plus or minus
an adjustment to be mutually agreed by the Parties from time to time for
variances between the standard cost

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component(s) of Manufacturing Costs and the actual costs incurred by the Parties
that such standard cost component(s) are intended to cover.

         1.20      "Detail" means a face-to-face contact of either an Eyetech or
Pfizer Sales Representative, as the case may be, with a medical professional
with prescribing authority during which scientific and/or medical information
about a Product is discussed. A Detail does not include a reminder or sample
drop. With respect to certain group or institutional presentations, or joint
details by Sales Representatives of both parties, Exhibit 1.20 sets forth how
such presentations will be counted for determination of the number of Details.
Details shall be measured by each Party's internal recording of such activity,
provided that such measurement shall be on the same basis as the recording
Party's measurement for its sales representatives detailing of such recording
Party's other products (if any), consistently applied throughout the
Co-Promotion Term. When used as a verb, the term "Detailing" means to engage in
the activity of a Detail.

         1.21      "Detailing Services Agreement" means the Detailing Services
Agreement dated as of the Execution Date between the Parties relating to an
arrangement by which Eyetech may, at its option, detail for Pfizer on a contract
basis Xalatan, Xalcom, and any other products approved for use in the Field
containing latanoprost as an active ingredient, including without limitation
Xalatan and Xalcom life-cycle products, that are owned by Pfizer or its
Affiliates.

         1.22      "Detailing Report" is defined in Section 6.4.

         1.23      "Detail Requirement" means the number of Details that each
Party's Sales Representatives are required to perform in the US Territory
pursuant to a Marketing Plan.

         1.24      "Development Costs" means the costs, including without
limitation Out-of-Pocket Costs in relation to the preclinical and clinical
development of Products and the conduct

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of Product Studies and direct and identifiable variable personnel costs in
relation to preclinical development of Products and the conduct of preclinical
Product Studies, as set forth in each relevant Development Plan; provided,
however, Development Costs shall not include any (a) Out-of-Pocket Costs paid by
either Party prior to December 1, 2002, (b) [**], or (c) except for direct and
identifiable variable personnel costs explicitly provided for in this Section
1.24, Internal Costs.

         In addition, Development Costs shall include Out-of-Pocket Costs and
direct and identifiable variable personnel costs of (w) manufacturing clinical
supplies of Products, (x) process development for clinical and commercial scale
manufacture of Products, including without limitation manufacturing process
optimization in accordance with Section 6.12(h), (y) stability studies and (z)
providing manufacturing transition support in accordance with Section 6.12.

         1.25      "Development Plan" is defined in Section 5.1.

         1.26      "Distribution Agreement" means the Distribution Agreement
dated as of the Execution Date between the Parties relating to the provision by
Pfizer of Product distribution services in the US Territory on a contract basis
for Eyetech.

         1.27      "DME Product" means a Product developed for use in the
treatment of diabetic macular edema.

         1.28      "DOJ" means the United States Department of Justice.

         1.29      "Effective Date" means the HSR Clearance Date.

          1.30      "Equity Agreements" means (a) the Series D Preferred Stock
Purchase Agreement dated as of the Execution Date, to which the Parties and
Pfizer Ireland are parties, and (b) the Amended and Restated Investors' Rights
Agreement, the Amended and Restated Right of First

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Refusal and Co-Sale Agreement and the Amended and Restated Voting Agreement,
each to be entered into by Eyetech and Pfizer Ireland after the Execution Date
in accordance with the aforementioned Series D Preferred Stock Purchase
Agreement.

         1.31      "FDA" means the United States Food and Drug Administration and
any successor agency thereto.

         1.32      "Field" means the prevention, treatment or control of all
ophthalmic diseases or conditions.

         1.33      "Fill and Finish Services Supplier" means a third party
supplier of fill and finish services necessary to produce Products in finished
(i.e., ready for administration to patients) form for sale in the US Territory
with which Eyetech or Pfizer enters into an agreement pursuant to Section 6.12.

         1.34      "First Approval" means the first Approval of a Product.

         1.35      "FTC" means the United States Federal Trade Commission.

         1.36      "Funded Inventory Build Costs" means the amount of pre-Launch
Manufacturing Costs funded by each of the Parties pursuant to Section 6.12(f).
Each Party's Funded Inventory Build Costs shall be increased by amounts funded
pursuant to Section 6.12(f) and reduced by the Inventory Build Credit applied
pursuant to Section 8.3.

         1.37      "GAAP" means accounting principles generally accepted in the
United States of America.

         1.38      "GMP" means the Good Manufacturing Practices regulations
promulgated by the FDA under the Act as of the time of manufacture of the
applicable Products.

         1.39      "Governmental Authority" means any court, agency, department
or other instrumentality of any foreign, federal, state, county, city or other
political subdivision.

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         1.40      "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements
Act of 1976, as amended (15 U.S.C. Sec. 18a), and the rules and regulations
promulgated thereunder.

         1.41      "HSR Clearance" means either (a) early termination of the
applicable waiting period under the HSR Act with respect to the HSR Filings or
(b) expiration of the applicable waiting period under the HSR Act with respect
to the HSR Filings.

         1.42      "HSR Clearance Date" means the earlier of (a) the date on
which the FTC or DOJ shall notify Eyetech and Pfizer of early termination of the
applicable waiting period under the HSR Act or (b) the day after the date on
which the applicable waiting period under the HSR Act expires.

         1.43      "HSR Filings" means the filings by Pfizer and Eyetech with the
FTC and the Antitrust Division of the DOJ of a Notification and Report Form for
Certain Mergers and Acquisitions (as that term is defined in the HSR Act) with
respect to the matters set forth in the Transaction Agreements, together with
all required documentary attachments thereto.

         1.44      "IND" means an investigational new drug application filed with
the FDA with respect to a Product.

          1.45      "Internal Costs" means a Party's and/or its Affiliate's costs
and expenses for overhead, personnel, rent, depreciation and amortization,
utilities, equipment leases, general and administrative expenses and similar
items.

         1.46      "Know-How" means unpatented technical and other information
which is not known to the public, including information comprising or relating
to concepts, discoveries, data, designs, formulae, methods, models, assays,
research plans, procedures, designs for experiments and tests and results of
experimentation and testing (including results of research or development),
together with processes, including manufacturing processes, specifications,

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techniques, chemical, pharmacological, toxicological, clinical, analytical and
quality control data, trial data, case report forms, data analyses, reports or
summaries, including documents (which shall include paper, notebooks, books,
files, ledgers, records, tapes, discs, diskettes, CD-ROM and any other media on
which the foregoing information can be permanently stored) containing any of the
foregoing information. The fact that an item is known to the public shall not be
taken to exclude the possibility that a compilation including the item, and/or a
development related to the item, is (or remains) not known to the public.

         1.47      "Launch" means the initial shipping of a Product as a, or for,
commercial sale to an unaffiliated third party, excluding any shipping for test
marketing, clinical trial purposes or compassionate or similar use.

         1.48      "Law" or "Laws" means all laws, statutes, rules, Codes,
regulations, orders, judgments and/or ordinances of any Governmental Authority.

         1.49      "License Agreement" means the License Agreement dated as of
the Execution Date between the Parties.

         1.50      "Major Country" means France, Germany, Italy, Spain or the
United Kingdom.

         1.51      "Manufacturing Costs" means costs that relate to (a) Products
supplied by a non-Affiliate third party, or (b) Products manufactured directly
by a Party or an Affiliate of a Party. In the case of (a), Manufacturing Costs
shall be a "standard cost" per unit, which standard cost shall include (i) the
amount paid to such a third party, plus (ii) the manufacturing Party's (i.e.,
the Party then responsible for manufacturing pursuant to Section 6.12) direct
and identifiable Internal Costs and Out-of-Pocket Costs, which amounts shall be
subject to the other Party's reasonable approval, incurred or accrued by the
manufacturing Party in connection with quality assurance, supply chain
management, and similar activities comprising the manufacturing

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Party's oversight of the manufacturing process of the non-Affiliate third party.
In the case of (b), Manufacturing Costs shall be a "standard cost" per unit,
which standard cost shall include the cost of raw materials, labor, and other
direct and identifiable variable costs and appropriate costs for equipment
pools, plant operations and plant support services. The costs for plant
operations and support services would include utilities, maintenance,
engineering, safety, human resources, finance, plant management and other
similar activities. The plant operations and support services costs would be
allocated on a mutually agreed basis consistent with GAAP. Costs which cannot be
identified to a specific activity supporting product manufacturing, such as
charges for corporate overhead which are not controllable by the manufacturing
plant, shall not be included in standard cost.

         1.52      "Marketing Expenses" means all Out-of-Pocket Costs paid or
accrued by a Party pursuant to a Marketing Plan and directly related to the
Co-Promotion of the Products in the US Territory, including those in connection
with:

                  (a) [**]

                  (b) [**] for the Products [**]; (iii) [**] the Products [**];
(iv) [**]; (v) [**] the Products [**]; and (vi) [**] the Products [**]. With
respect to [**] as determined in accordance with [**] subject to [**]; and

                  (c) [**] the Products.

         Notwithstanding the foregoing, Marketing Expenses shall not include any
costs or expenses incurred prior to the Execution Date, and shall include (i)
Eyetech's Out-of-Pocket Costs and direct and identifiable variable personnel
costs incurred pursuant to Section 6.13 and amounts paid by Eyetech to Pfizer
pursuant to the Distribution Agreement and (ii) filing or other user fees or
maintenance fees paid to the FDA in order for Eyetech or Pfizer, as the case may
be, to obtain or maintain regulatory approval for the Products.

                                       11

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         All other Out-of-Pocket Costs incurred in the Co-Promotion of the
Products in the US Territory, but not specifically identified above, but which
have been approved by the CSC or provided for in the Marketing Plan, shall be
accounted for and deemed Marketing Expenses for all purposes of this Agreement.

         1.53      "Marketing Plan" is defined in Section 6.2.

         1.54      "NDA" means a New Drug Application filed with the FDA with
respect to a Product.

         1.55      "Net Sales" means the gross amounts billed or invoiced by
Eyetech and its Affiliates for Products in the US Territory, less the following
deductions:

                  (a)       trade, quantity and cash discounts allowed, but
expressly excluding discounts or allowances offered as part of a package of
products that includes a Product sold by Eyetech or its Affiliates;

                  (b)       refunds, chargebacks and any other allowances which
effectively reduce the net selling price;

                  (c)       actual product returns, credits and allowances
allowed to customers, and actual bad debts;

                  (d)       rebates actually paid or credited to any governmental
agency (or branch thereof) or to any third party payor, administrator or
contractee;

                  (e)       discounts mandated by, or granted to meet the
requirements of, applicable state, provincial or federal law, wholesaler,
including required chargebacks and retroactive price reductions;

                                       12

<PAGE>

                  (f)       transportation, freight, postage charges and other
charges, such as insurance, relating thereto, in each case included as a
specific line item on an invoice to such third parties; and

                  (g)       taxes, excises or other governmental charges upon or
measured by the production, sale, transportation, delivery or use of goods, in
each case included as a specific line item on an invoice to such third parties.

         If any such sales to third parties are made in transactions that are
not at arm's length between the buyer and the seller, then the gross amount to
be included in the calculation of Net Sales shall be the amount that would have
been invoiced had the transaction been conducted at arm's length. Such amount
that would have been invoiced shall be determined, wherever possible, by
reference to the average selling price of the relevant Product in arm's-length
transactions in the US Territory.

         If Eyetech or its Affiliate sells a Product in unfinished form to a
third party for resale, then the gross amount to be included in the calculation
of Net Sales arising from such sale shall be the amount invoiced by the third
party upon resale, in lieu of the amounts invoiced by Eyetech or its Affiliates
when selling the Product in unfinished form. Otherwise, where Eyetech or its
Affiliate sells a Product in finished form to a third party that does not
require a sublicense under the Eyetech Patents for further resale (each such
third party hereinafter a "Distributor"), the amount to be included in the
calculation of Net Sales shall be the price invoiced from Eyetech or its
Affiliate to the third party, not the amount invoiced by the third party upon
resale.

         If, in addition to or in lieu of a transfer price paid for quantities
of Product supplied, any Distributor provides consideration to Eyetech or its
Affiliate in connection with any Product or the Distributor's rights or
relationship with Eyetech or its Affiliate in relation thereto, then such

                                       13

<PAGE>

consideration shall be included in the calculation of Net Sales in the Quarter
in which it becomes due to Eyetech or its Affiliate (as applicable).

         Notwithstanding the foregoing, amounts received by Eyetech or its
Affiliates (x) for the sale of Products among Eyetech and its Affiliates for
resale or (y) for the sale of Products by Eyetech or its Affiliates to Pfizer or
its Affiliates or sublicensees for resale in the ROW Territory, shall not be
included in the computation of Net Sales hereunder.

         Net Sales shall be determined from books and records maintained in
accordance with GAAP, consistently applied throughout the organization and
across all products of the entity whose sales of Product are giving rise to Net
Sales.

         1.56      "Other Product-Related Agreements" means the License
Agreement, the Distribution Agreement and the Regulatory Services Agreement.

         1.57      "Out-of-Pocket Costs" means costs and expenses paid to third
parties (or payable to third parties and accrued in accordance with GAAP), other
than Affiliates or employees, by either Party after the Execution Date (or, in
the case of Development Costs, after December 1, 2002).

         1.58      "Party" means either Eyetech or Pfizer; "Parties" means both
Eyetech and Pfizer.

         1.59      "Person" means any natural person or any corporation, company,
partnership, joint venture, firm or other entity, including without limitation a
Party.

         1.60      "Pharmacia Merger" means the merger contemplated by the
Agreement and Plan of Merger dated as of July 13, 2002 among Pfizer, Pilsner
Acquisition Sub Corp., a wholly owned Subsidiary of Pfizer, and Pharmacia
Corporation ("Pharmacia") (as the same may be amended or supplemented or
restated from time to time, the "Pharmacia Merger Agreement") providing for the
merger of Pilsner Acquisition Sub Corp. with and into Pharmacia.

                                       14

<PAGE>

         1.61      "Phase III Clinical Study" means a Product Study with study
design and statistical power intended to meet the requirement for Approval by
the FDA.

         1.62      "Phase III(b)/IV Product Study" means a clinical study
designed to support or profile a Product or intended to be the basis of a
post-approval Product filing, including without limitation proposed label
changes not explicitly described in Section 1.64 below, but not including any
clinical study intended to be the basis of any regulatory filing for initial FDA
or other Governmental Authority approval for marketing of Products or conducted
as a condition to the prior receipt of any regulatory approval for marketing of
Products. Phase III(b)/IV Product Studies shall include, without limitation,
epidemiological studies and modeling and pharmacoeconomic studies.

         1.63      "Product" means any product, that (a) contains or is based on
the anti-VEGF aptamer known as "Macugen" or "EYE001", including any metabolites
or prodrugs of such aptamer or any hydrates, conjugates, salts, esters, isomers,
polymorphs or analogues of any of the foregoing, either alone or in combination
with one or more other therapeutically active substances, and (b) is for use in
the Field; including for the avoidance of doubt any AMD Product, DME Product or
other product developed in accordance with the terms of this Agreement for any
indication in the Field other than AMD or DME, or as a new un-pegylated
formulation of any such AMD Product, DME Product or other product (each such
other product, an "Additional Developed Product").

         1.64      "Product Studies" means clinical, preclinical, safety, and
other studies that are designed to support FDA or other Governmental Authority
approval for marketing of Products. For the avoidance of doubt, Product Studies
shall not include [**], but shall include [**].

         1.65      "PSURs" means periodic safety update reports.

                                       15

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         1.66      "Quarter" means (i) with respect to Eyetech, each of the
periods ending on March 31, June 30, September 30 and December 31, and (ii) with
respect to Pfizer each of the periods ending at the end of each of the four (4)
thirteen (13) week periods as used by Pfizer as reported in its filings with the
Securities and Exchange Commission, the first such period commencing on January
1 of any year, and the terms "Eyetech Quarter" and "Pfizer Quarter" shall be
construed accordingly.

         1.67      "Regulatory Costs" means the costs, including without
limitation the Out-of-Pocket Costs and direct and identifiable variable
personnel costs, in relation to making or supporting regulatory filings in the
US Territory; provided, however, Regulatory Costs shall not include any (a)
Out-of-Pocket Costs paid by either Party prior to the Execution Date, (b) costs
of making or supporting regulatory filings in the ROW Territory, or (c) except
for direct and identifiable variable personnel costs explicitly provided for in
this Section 1.67, Internal Costs. In addition, Regulatory Costs shall include
amounts paid by Eyetech to Pfizer under the Regulatory Services Agreement.

         1.68      "Regulatory Services Agreement" means the Regulatory Services
Agreement dated as of the Execution Date between the Parties relating to the
provision by Pfizer of specified regulatory services in the US Territory on a
contract basis for Eyetech.

         1.69      "ROW Territory" means all countries in the world other than
the US Territory.

         1.70      "Sales Representative" means an individual who engages in
Detailing and other promotional efforts in the Field with respect to the
Products and who has been trained and is employed by either Pfizer or Eyetech or
their respective Affiliates.

         1.71      "Senior Executive" means, with respect to Eyetech, the Chief
Executive Officer of Eyetech, and with respect to Pfizer, a corporate officer of
Pfizer with senior decision-making

                                       16

<PAGE>

authority; "Senior Executives" means both such officers. Pfizer shall initially
designate Karen Katen as its Senior Executive.

         1.72      "Specifications" means the specifications for the manufacture
and packaging of the Products consistent with the NDA.

         1.73      "Subsidiary" means, with respect to a Party, a majority or
wholly-owned direct or indirect subsidiary of such Party.

         1.74      "Territory" means the US Territory and the ROW Territory.

         1.75      "Trademark" means (i) MACUGEN and (ii) any other trademark
associated with the Products that may be selected by the Parties in accordance
with Section 10.1(e), excluding the respective corporate names and logos of the
Parties.

         1.76      "Transaction Agreements" means this Agreement, the Other
Product-Related Agreements, the Equity Agreements and the Detailing Services
Agreement.

          1.77      "US Territory" means the United States of America, including
its territories, possessions and Puerto Rico.

         1.78      "Xalatan" means latanoprost ophthalmic solution which is
presently sold by Pharmacia under the trademark Xalatan(R) as a single entity.

         1.79      "Xalcom" means product containing as active ingredients
latanoprost and timolol and which is presently sold by Pharmacia under the
trademark Xalcom(R) as a single entity.

         1.80      "Year" means each calendar year during the Co-Promotion Term.

                                       17

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                                    ARTICLE 2

                  CO-PROMOTION OF PRODUCTS IN THE US TERRITORY

         2.1       Co-Promotion. Subject to the terms of this Agreement, the
Parties shall Co-Promote Products in the US Territory co-exclusively with each
other as provided in this Agreement.

         2.2       License Grants. Each Party's rights under intellectual
property rights owned or controlled by the other Party, with respect to the
development, manufacture and Co-Promotion of Products in the US Territory, are
as set forth in the License Agreement.

         2.3       Compliance With Law. Both Pfizer and Eyetech shall Co-Promote
the Products in the US Territory in accordance with applicable Law, the terms of
this Agreement and the then-current Marketing Plan. Neither Party shall be
required to undertake any action or inaction, or to incur expenditures in
connection with any such action or inaction under this Agreement that it
believes, in good faith, may violate any Law.

         2.4       Detailing Obligations. Subject to Exhibit 6.2, the Detailing
obligations of the Parties in respect of the Products shall be as set out in the
then-current Marketing Plan.

         2.5       Training.

                  (a)       Pfizer shall, at its sole expense, provide initial
sales and product training in connection with the first Product Detailed by
Eyetech Sales Representatives in the US Territory pursuant to this Agreement for
up to forty (40) Eyetech Sales Representatives. Eyetech may also elect to have
Pfizer provide such initial sales and product training to an additional fifteen
(15) Eyetech Sales Representatives, in which case Eyetech shall reimburse Pfizer
for Pfizer's Out-of-Pocket Costs and direct and identifiable variable personnel
costs incurred in connection with such training for such additional Sales
Representatives. Such training shall, at Eyetech's option,

                                       18

<PAGE>

be conducted in multiple program sessions; provided that Pfizer shall not be
required to provide more than four (4) separate program sessions, the first
three (3) of which shall be for not less than ten (10) Eyetech Sales
Representatives each. A description of Pfizer's current initial sales force
training program is described in Exhibit 2.5. Such program is subject to
revision from time to time by Pfizer, provided that the initial training
provided by Pfizer to Eyetech from time to time shall be the same as the initial
training that Pfizer contemporaneously provides to Pfizer's Sales
Representatives that Detail Products. Pfizer will provide ongoing training
relating to Products for the trainers of Eyetech's Sales Representatives. All
training programs for Eyetech's Sales Representatives other than the initial
sales and product training will be the responsibility of Eyetech, at its sole
expense; provided, however, that Pfizer will provide follow-up training for such
Eyetech Sales Representatives at Eyetech's reasonable request, provided that
Eyetech reimburses Pfizer for the reasonable costs and expenses incurred by
Pfizer in connection with such follow-up training. In order to coordinate the
training of Eyetech Sales Representatives with training of Pfizer Sales
Representatives, any training provided by Pfizer to Eyetech Sales
Representatives pursuant to this Section 2.5(a) shall take place at times and at
locations reasonably selected by Pfizer in consultation with Eyetech.

                  (b)       Pfizer and Eyetech shall, each at its own expense
(except as otherwise set forth in Section 2.5(a)), comply with any training plan
for the Products contained in the applicable Marketing Plan.

                  (c)       If a Party organizes Co-Promotion-related meetings of
its employees (such as periodic briefings of its Sales Representatives), it will
make reasonable efforts to keep the Product-related portions of such meetings
independent from other matters and to give the other Party advance notice of
such meetings. If requested by the other Party, the Party organizing such

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<PAGE>

meeting will permit Sales Representatives of the other Party to attend and
participate in such meetings or such portions thereof which relate to the
Co-Promotion of Products.

         2.6       Promotional Materials and Call Center Communications. The
Parties will only utilize promotional, advertising, communication and
educational materials relating to the Products in the US Territory (collectively
"Promotional Materials") and only conduct promotional activities for the
Products which, in each case, have been approved in the Marketing Plan or
otherwise by the CSC (as defined in Section 3.1). All Promotional Materials
shall name and feature both Parties with equal prominence. All promotional
activities conducted by the Parties shall be consistent with the Promotional
Materials so approved and the then-current Marketing Plan. Promptly after the
Effective Date, the Parties will mutually agree upon procedures whereby
designated representatives of each of them representing the marketing, medical,
regulatory and legal functions, will meet, whether in person, by telephone or by
videoconference, in order to discuss all promotional activities (except for
Detailing) and Promotional Materials prior to final approval thereof by the CSC.
In addition, as a prominent part of each communication with customers and other
third parties, the Call Center shall clearly identify the Products as joint
products of Eyetech and Pfizer. Eyetech shall own all rights to all Promotional
Materials, including all copyrights thereto, and Pfizer hereby assigns to
Eyetech all rights, title and interests of Pfizer in and to such Promotional
Materials, including without limitation all copyright interests of Pfizer
therein. Unless and until Promotional Materials are approved by the CSC for
publication or other general dissemination, each Party shall maintain them in
confidence pursuant to the terms of Article 11.

         2.7       Samples. The Parties, through the CSC, shall determine whether
it is necessary and appropriate to undertake a sampling program for the first
Product and, if so, the appropriate

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<PAGE>

terms and allocation of responsibilities for satisfying such sampling program;
provided that any samples will be allocated fairly between the Parties'
respective Sales Representatives in accordance with the Detailing arrangements
set forth in the Marketing Plan; and provided further that each Party shall be
responsible, at its sole expense, for (a) accounting for samples held, disposed
of or distributed by such Party or its Sales Representatives, (b) destroying and
disposing of samples after the latest date on which such samples are usable and
(c) complying with the requirements of all applicable Laws, including without
limitation the requirements of the Prescription Drug Marketing Act of 1987, as
amended.

         2.8       Distribution and Booking of Sales. Eyetech shall be
responsible for distribution, invoicing, credit and collection for the Products
in the US Territory. Eyetech will book all sales of Products in the US
Territory; provided that this Section 2.8 shall not be construed as an assurance
by Pfizer to Eyetech regarding the appropriate accounting treatment of such
sales.

         2.9       Contract Sales Forces. Without the consent of the other Party,
neither Pfizer nor Eyetech may use any contract sales force to Co-Promote or
Detail any Product.

         2.10      Delivery Technology Development Agreement. Promptly after the
Effective Date, the Parties shall in good faith discuss entering into a separate
agreement to provide for the development by the Parties of additional Product
delivery technology. The Parties intend to provide in such agreement for a
sharing between the Parties of the costs and benefits of developing and
commercializing such additional delivery technology on the same basis as
development costs and commercialization benefits are shared under this Agreement
and the License Agreement; provided that, for the avoidance of doubt, it is
agreed that neither Party would be required to make any upfront license fee
payments to the other Party in connection with such separate agreement.

                                        21

<PAGE>

                                    ARTICLE 3

                             MANAGEMENT OF ALLIANCE

         3.1       Committee/Subcommittees. In order to fulfill the objectives of
this Agreement, the Parties agree to establish a Joint Operating Committee
("JOC"), a Commercialization Subcommittee ("CSC"), a Clinical
Development/Regulatory Subcommittee ("CDRSC"), and a Manufacturing Subcommittee
("MSC"), and such other committees and subcommittees as may be established by
mutual consent of Eyetech and Pfizer. Each committee and subcommittee shall have
two co-chairpersons, one designated by each of Eyetech and Pfizer. All decisions
of the committees and subcommittees shall be by a vote of the co-chairpersons,
each co-chairperson having one vote, and all decisions shall be by unanimous
consent of the co-chairpersons.

         3.2       Meetings. The chairpersons of the JOC, CSC, CDRSC, MSC, or any
other committee or subcommittee, shall call meetings quarterly, or as otherwise
requested by one of the Parties. Meetings may be held in person, by telephone,
or by video conference call, and the location of each meeting shall alternate
between sites located in New York, New York selected by each co-chairperson.
Additional participants may be invited by any representative to attend meetings
where appropriate. The Parties shall cause their respective representatives on
the committees and subcommittees to use diligent efforts, acting in good faith,
to resolve all matters presented to them as expeditiously as possible.

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<PAGE>

         3.3       Clinical Development/Regulatory Subcommittee.

                  (a)       The CDRSC shall consist of research and development,
commercial, regulatory and marketing/medical managers (as needed) from each of
Eyetech and Pfizer, each of which shall confirm to the other its designees. The
CDRSC will establish a clinical development working group that shall be
responsible for:

                           (i)       Preparing annual Development Plans;

                           (ii)      Monitoring progress of all Product Studies
in the Territory (including reviewing costs and activities against the annual
Development Plan);

                           (iii)     Facilitating the exchange of all development
information and data relating to all Product Studies in the Territory;

                           (iv)      Review and approval of statistical analysis
plans and protocols for all Product Studies in the Territory and revising any
investigator's brochure(s); and

                           (v)       Providing updates on its activities and
achievements to the JOC.

                  (b)       The CDRSC will also establish a regulatory working
group that will be responsible for:

                            (i)       Overseeing, monitoring and coordinating all
regulatory (FDA) aspects of the US Territory Product Approval program, including
all US Territory regulatory actions, communications and filings (including
matters pertaining to Product labeling) and submissions (including filings and
submissions of supplements and amendments to FDA with respect to the Products);

                           (ii)      Establishing the schedule and implementation
strategy for all FDA filings;

                                        23

<PAGE>

                           (iii)     Coordinating preparation for and attendance
at FDA advisory committee meetings;

                           (iv)      Coordinating responses to additional FDA
requirements and FDA inquiries;

                           (v)       Proposing, overseeing and agreeing upon a
regulatory strategy and plan for obtaining regulatory approvals for the Products
in the Territory;

                           (vi)      Facilitating the exchange of all regulatory
information and data relating to Products in the Territory;

                           (vii)     Facilitating the exchange of information in
conjunction with Section 4.3 of this Agreement in order to ensure that
significant issues concerning adverse event information and safety issues are
addressed consistently among Governmental Authorities in the Territory; and

                           (viii)    Providing updates on its activities and
achievements to the JOC.

                  (c)       Neither Party shall make any change to any annual
Development Plan without the prior approval of the CDRSC, and all Development
Plans and Development Costs provided therein shall be consistent with the terms
of this Agreement. If the CDRSC is unable to reach a decision on any issue
within fifteen (15) Business Days after presentation, either Party may refer the
issue to the JOC for resolution.

                  (d)       Following a referral to the Senior Executives of the
Parties pursuant to Section 3.7 below, the final decision-making authorities set
out in Sections 3.3 (e), (f), (g) and (h) shall apply.

                  (e)       [**] shall have the final decision-making authority
for matters relating to [**] for such Product [**] to such Product [**];
provided, however, that [**] shall have the final

                                       24

<PAGE>

decision-making authority as to [**], provided that [**]. For purposes of the
previous sentence, [**]; provided, however, that [**].

                  (f)        [**] shall have final decision-making authority with
respect to [**] the Parties shall [**]. Except as otherwise set forth in this
Agreement, [**] shall have final decision-making authority with respect to [**].

                  (g)       Notwithstanding the Parties' joint approval rights
set forth in Section 3.3(f), [**] may not prevent [**] from [**] for the
applicable Product, [**].

                  (h)       Subject to Pfizer's fulfillment of its obligations
under the Regulatory Services Agreement, which shall require Pfizer to perform
its obligations thereunder in a commercially reasonable manner, in the event
that Eyetech materially fails to discharge its regulatory obligations in the US
Territory in a commercially reasonable manner applying accepted pharmaceutical
industry standards, and in compliance with all Laws, and fails to cure such
failure following written notice thereof from Pfizer and a reasonable
opportunity to cure, then the final decision-making authority with respect to
[**] the Products [**] shall be transferred to Pfizer for the balance of the
Co-Promotion Term; provided that in the event that after such transfer (x)
Pfizer closes a Divestiture Transaction pursuant to Section 17.11 or (y)
materially fails to discharge its regulatory obligations in the US Territory in
a commercially reasonable manner applying accepted pharmaceutical industry
standards, and in compliance with all Laws, and fails to cure such failure
following written notice thereof from Eyetech and a reasonable opportunity to
cure, then the final decision-making authority with respect to [**] the Products
[**] shall thereafter be exercised jointly by the Parties for the balance of the
Co-Promotion Term.

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<PAGE>

         3.4        Commercialization Subcommittee.

                  (a)       The CSC shall consist of members from each of Eyetech
and Pfizer, each of which shall confirm to the other its designees. The CSC
shall be responsible with respect to the US Territory for:

                            (i)       Preparing and implementing annually the
Marketing Plan;

                           (ii)      Monitoring progress under and compliance
with the Marketing Plan;

                           (iii)     Coordinating with the CDRSC with respect to
regulatory issues and future Product development activities to be undertaken
pursuant to the Development Plans;

                           (iv)      Developing positioning and market strategies
consistent with the Marketing Plan, including decisions to seek or include any
new indication, formulation or usage for the Products, such as for life cycle
management;

                           (v)       Developing advertising material and
strategies and promotional materials for the Parties' Sales Representatives for
the Products, designing packaging, and planning and overseeing educational and
professional symposia and speaker and activity programs for the Products in the
US Territory;

                           (vi)      Providing updates on the CSC's activities
and achievements to the JOC; and

                           (vii)     Discussing the prices at which the Products
will be sold to unaffiliated third parties throughout the Territory.

                  (b)       Following a referral to the Senior Executives of the
Parties pursuant to Section 3.7 below, the final decision-making authorities set
out in Sections 3.4(c), (d) and (e) shall apply.

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<PAGE>

                  (c)       Subject to Sections 3.4(d), (e) and (f) below, Pfizer
shall have final decision-making authority with respect to [**]:

                           (i)   activities [**];

                           (ii) [**]

                           (iii) [**] the Products; and

                            (iv) [**], including [**],

                  (d) [**] shall have final decision-making authority with
respect to:

                           (i)   [**] Eyetech shall [**]; and

                           (ii) [**] Eyetech [**]

                   (e) The Parties shall mutually agree upon [**] Products [**]
covered by [**] shall have [**].

                  (f) Notwithstanding the provisions of Section 3.4(c), but
subject to the provisions of Section 3.4(g), in the event that Pfizer closes a
Divestiture Transaction pursuant to Section 17.11, the final decision-making
authority with respect to all US Territory marketing and other commercial
activities for the Products pursuant to this Section 3.4, [**] Eyetech [**]
pursuant to [**] shall thereafter be exercised jointly by the Parties for the
balance of the Co-Promotion Term.

                  (g)       All Marketing Plans shall be consistent with the
terms of this Agreement. If the CSC is unable to reach a decision on any issue
within fifteen (15) Business Days after presentation, either Party may refer the
issue to the JOC for resolution.

         3.5       Manufacturing Subcommittee.

                  (a)       The MSC shall consist of members from each of Eyetech
and Pfizer, each of which shall confirm to the other its designees. The MSC
shall be responsible for:

                           (i)       Overseeing manufacturing activities underway
as of the Effective Date, including formulation development, product
characterization studies, stability studies, and management of clinical supplies
of the Products;

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<PAGE>

                           (ii)      Overseeing the manufacturing of registration
batches of Product;

                           (iii)     Overseeing process development plans;

                           (iv)      Monitoring worldwide quality assurance
efforts and ensuring that all Products are manufactured in accordance with the
Parties' quality standards;

                           (v)        Overseeing supply relationships with any
third party manufacturers;

                           (vi)      Subject to Section 4.1(c), review of the CMC
section of the NDA for each Product, provided that the time period for reviewing
any such CMC section shall, notwithstanding the provisions of Section 4.1(c), be
thirty (30) days from the date on which Eyetech, through the CDRSC, provides
Pfizer with a draft of the NDA pursuant to Section 4.1(c);

                           (vii)     Overseeing manufacture of the Products;

                           (viii)    Reviewing and approving Specifications for
purposes of the NDA and for Launch;

                           (ix)      Commencing and overseeing any new
manufacturing activities, including Product manufacturing process validation
prior to NDA approval and any pre-approval inspection of the Product
manufacturing subcontractors;

                           (x)       Coordinating with the CSC and CDRSC as
appropriate;

                           (xi)      Preparation for FDA inspections and ensuring
adherence to compliance standards;

                           (xii)     Evaluating the forecasts provided in each
Marketing Plan as well as inventory levels for the Product and future logistic
strategies and capacity planning;

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<PAGE>

                           (xiii)    Reviewing quality-related issues concerning
the Product or any component thereof; and

                           (xiv)     Providing updates on the MSC's activities
and achievements to the JOC.

                  (b)       If the MSC is unable to reach a decision on any issue
within fifteen (15) Business Days after presentation, either Party may refer the
issue to the JOC for resolution. Following a referral to the Senior Executives
of the Parties pursuant to Section 3.7 below, [**]shall have final
decision-making authority with respect to [**]; provided that:

                           (i)       Pfizer shall [**] any agreement [**] entered
into [**] (ii) [**] Pfizer [**] and/or [**] that otherwise would [**], and
Pfizer [**] pursuant to this Section 3.5 [**],

                           (iii)     [**] Pfizer [**] pursuant to Section 17.11,
[**],

                           (iv)      [**] the Parties, and

               (v)     [**] all Products [**].

3.6 Joint Operating Committee.

                  (a)       The Joint Operating Committee ("JOC") shall consist
of an equal number of members from each of Eyetech and Pfizer. Each of Eyetech
and Pfizer shall confirm to the other its designees. At least one of Pfizer's
designees shall be the Vice President in Pfizer's Pharmaceuticals Group with
global responsibility for the therapeutic area covering the Products. The JOC
shall address all of the significant and strategic issues within the purview of
the various subcommittees, and shall be responsible for resolving any issues
referred by the subcommittees. The JOC will be presented with updates on the
activities and achievements of the subcommittees. All decisions of the JOC will
be unanimous votes of the co-chairpersons.

                                       29

<PAGE>

                  (b)       If the JOC is unable to resolve any issue within ten
(10) Business Days after presentation, either Party may refer the issue to the
Senior Executives for resolution pursuant to Section 3.7.

         3.7       Deadlocks. If for any reason the JOC cannot resolve any matter
properly referred to it, either Party may refer the matter to the Senior
Executives for resolution. If after discussing the matter in good faith and
attempting to find a mutually satisfactory resolution to the issue, the Senior
Executives fail to come to consensus within five (5) Business Days of the date
on which the matter is referred to the Senior Executives, the provisions of
Sections 3.3(d), 3.4(b), and 3.5(b), as applicable, shall apply and resolutions
reached through such provisions shall be binding on the Parties; provided that
such decisions are made in good faith and are consistent with the provisions of
this Agreement.

         3.8       Limitation on Decision-Making Authority. Notwithstanding
anything to the contrary, none of the committees or subcommittees contemplated
by this Article 3 nor any Senior Executive pursuant to this Article 3 shall be
entitled to determine any matters for which: (a) one or more of the Parties is
allocated decision-making authority elsewhere in this Agreement; or (b) such
determination would violate or permit the violation of any express provision of
this Agreement, including, without limitation, the provisions of Sections
3.3(f), 3.3(g), 3.3(h), 3.4(e) and 3.5(b) that provide explicitly for mutual or
joint decision-making; or (c) this Agreement provides that neither Party shall
have final decision-making authority or provides that a decision shall not be
made without the approval or consent of a particular Party.

                                       30

<PAGE>

                                   ARTICLE 4

                         CLINICAL AND REGULATORY MATTERS

         4.1        Clinical and Regulatory Matters in the US Territory. This
Section 4.1 shall apply to clinical and regulatory matters relating to Products
in the US Territory.

                  (a)       Subject to Section 3.3, [**]FDA for the Products [**]
for each of the Products.

                  (b)       All NDAs and Approvals within the US Territory
relating to the Products shall be the property of Eyetech and held in the name
of Eyetech or its designated Affiliates. Eyetech's designated representative
shall serve as the designated regulatory official for Products in the US
Territory for purposes of receiving communications from the FDA.

                  (c)       Eyetech will provide Pfizer with copies, which copies
may be in draft form, of the following submissions to the FDA through the CDRSC.
If reasonably practicable, Eyetech will provide Pfizer with such copies at least
fifteen (15) days prior to planned submission to the FDA by Eyetech, whereupon
Pfizer shall provide comments to Eyetech regarding such submission at least ten
(10) days prior to such planned submission, and, Eyetech shall reasonably
consider the comments given by Pfizer prior to making such submission:

                           (i)       all annual reports regarding a Product prior
to First Approval of such Product, including without limitation the annual
reports required under 21 C.F.R. 312.33 as it may be amended; and

                           (ii)      all other filings that are not subject to a
deadline imposed by the Act of less than twenty-one (21) days after discovery of
an event that triggers the filing requirement and that are not otherwise
required to be jointly agreed upon pursuant to Section 4.1(d).

                                       31

<PAGE>

                  (d)       Eyetech shall provide notice to Pfizer within two (2)
Business Days of discovery by Eyetech of any event that triggers an FDA filing
requirement that is subject to a deadline imposed by the Act of less than
twenty-one (21) days after the discovery of such an event. Eyetech shall
promptly provide copies of any correspondence or other submission subject to
this Section 4.1(d) to Pfizer, and the chairpersons of the CDRSC shall discuss
in good faith and on a timely basis determine the most effective and expeditious
means of responding to such FDA filing requirement.

                  (e)       Eyetech shall provide notice to Pfizer of any
additional FDA requirements which FDA may impose with respect to the First
Approval, (including without limitation, additional clinical studies) and of all
FDA inquiries requiring a response within two (2) Business Days of receipt
thereof by Eyetech. Eyetech will promptly provide Pfizer with copies of all
correspondence between Eyetech and FDA and copies of all FDA contact reports
produced by Eyetech.

                  (f)       In connection with Sections 4.1(a), (b) and (c)
above, Eyetech shall provide Pfizer with notice of all meetings, conferences,
and discussions (including without limitation, advisory committee meetings and
any other meeting of experts convened by FDA concerning any topic relevant to
the Products) scheduled with FDA concerning any pending NDA or other regulatory
matters relating to the Products within two (2) Business Days after Eyetech
receives notice of the scheduling of such meeting, conference, or discussion.
Pfizer shall be entitled to have reasonable representation present at all such
meetings. Eyetech and Pfizer, through the CDRSC, shall use reasonable efforts to
agree (subject to Section 3.3(f)(i) to the extent applicable) in advance on the
scheduling of such meetings and on the objectives to be

                                       32

<PAGE>

accomplished at such meetings, conferences, and discussions and the agenda for
the meetings, conferences, and discussions with FDA.

                  (g)       Each Party shall provide to the other Party, through
the CDRSC, on a timely basis copies of all material pre-clinical and clinical
data compiled in support of an NDA or other regulatory filings in the US
Territory with respect to the Products.

                  (h)       Any decision to initiate a recall or withdrawal of
Product in the US Territory shall be made by the CDRSC. Before the CDRSC
initiates a recall or withdrawal, and upon the request for a recall or
withdrawal by either Party, the Parties shall promptly and in good faith discuss
the reasons therefor. Under no circumstances shall either Party unreasonably
object to a recall or withdrawal requested by the other Party, and neither Party
shall have any right to object to a recall or withdrawal requested by the other
Party for failure of a Product to meet the Specifications, for material safety
concerns or for noncompliance with the Act. In the event of any recall or
withdrawal, Pfizer shall implement any necessary action, with assistance from
Eyetech as reasonably requested by Pfizer.

         4.2       Clinical and Regulatory Matters in the ROW Territory. This
Section 4.2 shall apply to clinical and regulatory matters relating to Products
in the ROW Territory.

                  (a)       After the Effective Date, Pfizer will assume sole
ownership, control of and responsibility for all regulatory filings in the ROW
Territory, and Eyetech shall cooperate with Pfizer in connection with such
filings as reasonably requested by Pfizer and at Pfizer's sole cost and expense.
Prior to Pfizer taking over responsibility for contracting with API Bulk Drug
Substance Supplier(s) and/or Fill and Finish Services Supplier(s) or performing,
either directly or through Affiliates, services that otherwise would be
performed by API Bulk Drug Substance Supplier(s) and/or Fill and Finish Services
Supplier(s) in accordance with Section 6.12, Eyetech

                                       33

<PAGE>

shall be responsible for providing Pfizer with Product samples for use in
connection with regulatory filings relating to Products in the ROW Territory at
Pfizer's sole cost and expense.

                  (b)       All regulatory approvals in the ROW Territory
relating to the Products shall be deemed the property of Pfizer and held in
Pfizer's or its Affiliate's name.

                  (c)       Pfizer's rights under Sections 4.2(a) and (b) above
are subject to the following: Pfizer shall provide Eyetech with notice of all
meetings, conferences, and discussions (including without limitation, any
meeting of experts convened by regulatory authorities concerning any topic
relevant to the Products) scheduled with Governmental Authorities concerning any
material regulatory matters relating to the Products within two (2) Business
Days after the scheduling of such meeting, conference, or discussion. Eyetech
shall be entitled to have reasonable representation present at all such
meetings. In addition, with respect to clinical and regulatory matters in the
ROW Territory, Pfizer shall promptly provide Eyetech with (i) copies of all
pre-clinical and clinical data compiled in support of regulatory filings in the
ROW Territory, (ii) copies of all material regulatory correspondence with EMEA,
as defined in the License Agreement, (or any Governmental Authority in a Major
Country) and with Japanese Governmental Authorities, (iii) advance copies of
material submissions to EMEA (or any Governmental Authority in a Major Country)
and to Japanese Governmental Authorities, and the same opportunity to comment in
advance on such submissions (and to have its comments reasonably taken into
account) as Pfizer is provided with respect to the submissions to FDA under
Section 4.1(c), provided, however, that an inadvertent failure by Pfizer to
submit Eyetech advance copies pursuant to this Section 4.2(c)(iii) shall not be
considered a material breach of this Agreement if Pfizer has implemented
procedures reasonably designed to avoid any such failure and cures any such
failure promptly after its discovery, (iv) notices of any revocations of

                                       34

<PAGE>

Product marketing approvals and any Product recalls, and (v) reasonable
responses to inquiries by Eyetech regarding the regulatory approval and
commercialization processes for each Product in the ROW Territory, including
without limitation reasonable access to Pfizer personnel, documents and files in
connection with such inquiries.

         4.3       Inquiries, Adverse Events, etc.

                   (a)       Eyetech and Pfizer shall be responsible for the
surveillance, receipt, evaluation, and reporting of product complaints and
reports of adverse drug experiences, for the Products in the US Territory and
the ROW Territory, respectively; provided, however, during the term of the
Regulatory Services Agreement, Pfizer shall perform certain of such US Territory
responsibilities on behalf of Eyetech under the terms of the Regulatory Services
Agreement.

                  (b)       Eyetech shall be responsible for promptly
investigating Product complaints and reports of adverse drug experiences and
other required safety information (e.g., PSURs and annual safety reports)
associated with the use of any Product in the US Territory. As to each Product,
Eyetech shall submit reports of all adverse drug experiences associated with the
use of the Product(s) and other required safety information to the FDA in
accordance with applicable Law. Eyetech shall submit a copy of each such report
to Pfizer contemporaneously with its submission of the report to FDA, or in
advance of such submission if, and as, reasonably necessary to permit Pfizer to
comply with legal requirements applicable to it, if practicable.

                  (c)       Pfizer shall promptly investigate Product complaints
and reports of adverse drug experiences and other required safety information
(e.g., PSURs and annual safety reports) associated with the use of any Product
in the ROW Territory. As to each Product, Pfizer shall submit reports of all
adverse drug experiences associated with the use of the Product(s) and other
required safety information to the applicable Governmental Authorities in the
ROW

                                       35

<PAGE>

Territory in accordance with applicable Law. Pfizer shall submit a copy of each
such report to Eyetech contemporaneously with its submission of the report to
the applicable Governmental Authority in the ROW Territory, or in advance of
such submission if, and as, reasonably necessary to permit Eyetech to comply
with legal requirements applicable to it, if practicable.

                  (d)       Eyetech shall have the sole responsibility for
revising the Product labeling for the US Territory, and Pfizer for the ROW
Territory, as needed, to adequately warn of the potential risks identified by
reports of adverse drug experiences associated with the use of the Product and
from Product complaints. In addition, the Parties agree to jointly develop
additional written procedures including the mechanics for the surveillance,
receipt, evaluation, and reporting of Product complaints and adverse drug
experiences, including the possible maintenance of a worldwide safety database,
in accordance with this Article 4 and subject to the oversight of the CDRSC.

                   (e)       Each Party shall notify the other Party within two
(2) Business Days after it receives information about the initiation of any
investigation, review or inquiry by FDA or other Governmental Authority
concerning the distribution, promotion or sale of the Product, not otherwise
described above.

         4.4       Pfizer's Performance of Regulatory Services Agreement
Obligations. During the term of the Regulatory Services Agreement, all of
Eyetech's regulatory obligations under this Agreement are subject to Pfizer's
performance of its obligations under the Regulatory Services Agreement to the
extent Eyetech's performance of Eyetech's obligations depends on Pfizer's
performance of Pfizer's obligations under the Regulatory Services Agreement.

                                       36

<PAGE>

                                   ARTICLE 5

                               PRODUCT DEVELOPMENT

         5.1       Development Plan and Budget. The CDRSC shall develop an annual
development plan, which shall include preclinical and clinical plans and a
budget (a "Development Plan") in respect of the Products consistent with the
terms of this Agreement for each Year during the Co-Promotion Term. The CDRSC
shall meet to discuss the first Development Plan within ninety (90) days after
the Execution Date. A description of the overall development programs for
development of the AMD Product and DME Product is attached as Exhibit 5.1(a),
and a summary of the budgets for agreed upon Development Costs for such programs
(respectively, the "AMD Agreed Development Costs" and the "DME Agreed
Development Costs") are attached as Exhibit 5.1(b) to this Agreement. Each
annual Development Plan may be updated throughout the Year as deemed appropriate
by the CDRSC. Cumulative Development Costs for each of the AMD Product and DME
Product shall not exceed the AMD Agreed Development Costs and the DME Agreed
Development Costs, respectively, for such Products absent mutual consent of the
Parties. The Parties' respective obligations with respect to Development Costs
shall be as set forth in Section 8.1, provided that, unless otherwise agreed by
the Parties, neither Party shall be obligated to pay for any Development Costs
in excess of the AMD Agreed Development Costs or the DME Agreed Development
Costs, respectively, except to the extent a Party exercises its final
decision-making authority in accordance with Article 3 to approve such excess
Development Costs over the objection of the other Party or otherwise
unilaterally incurs such excess Development Costs, in which case the Party
exercising such final decision-making authority or unilaterally incurring excess
Development Costs shall be solely responsible for such excess Development Costs.
The Parties

                                        37

<PAGE>

acknowledge that the budgets set forth in Exhibit 5.1(b) do not cover
preclinical Development Costs for periods after the end of 2003 and do not cover
Development Costs for manufacturing process development and optimization. With
respect to such Development Costs not covered by the budgets set forth in
Exhibit 5.1(b), the Parties shall discuss reasonably necessary preclinical
Development Costs for subsequent periods and Development Costs for manufacturing
process development and optimization, and amend Exhibit 5.1(b) to cover such
additional Development Costs.

         5.2       AMD Product and DME Product Development. Each of the Parties
shall, during the Co-Promotion Term, use Commercially Reasonable Efforts to
develop and obtain Approvals for at least one AMD Product and one DME Product as
provided in this Agreement. In the event that a party fails to exercise such
Commercially Reasonable Efforts, such Party's sole liability and the other
Party's sole remedy for such failure shall be termination of this Agreement in
accordance with Section 13.2.

         5.3       Development of Products for Additional Indications in the
Field. At the request of either Party, the Parties shall in good faith meet and
discuss jointly developing Additional Developed Products where preclinical
and/or clinical results provide a reasonable basis for pursuing such additional
development or the pursuit of such additional development is otherwise
potentially commercially attractive. If the Parties agree to pursue such
additional development, the Parties shall amend the applicable Development
Plan(s) accordingly. If the Parties do not agree to pursue such additional
development, either Party shall have the right to pursue development of such
Additional Developed Products at its sole expense, subject to the other Party's
rights under this Agreement with respect to the Co-Promotion of Products
(including Additional Developed Products); provided, however, that such
additional development would

                                        38

<PAGE>

not, based on the best available scientific evidence, be reasonably likely to
have a materially adverse effect on the Co-Promotion of the Products.

                                   ARTICLE 6

                       LAUNCH, CO-PROMOTION AND DETAILING

         6.1       Co-Promotion of Products. Eyetech and Pfizer shall be jointly
responsible for the Co-Promotion of Products in the US Territory, with each
Party participating (except as otherwise expressly provided in this Agreement)
in all types of marketing activity in the US Territory. Each of the Parties
shall Co-Promote the Products in the US Territory during the Co-Promotion Term
in accordance with the terms of this Agreement and the applicable Marketing
Plan, and in compliance with all Laws. In conducting Co-Promotion activities,
each Party shall use Commercially Reasonable Efforts to Co-Promote the sale of
the Products in the US Territory. In the event that a Party fails to exercise
such Commercially Reasonable Efforts, such Party's sole liability and the other
Party's sole remedy for such failure shall be (a) termination of this Agreement
in accordance with Section 13.2 and (b) if applicable to such failure, the
remedies set forth in Section 6.5 below. All aspects of each Marketing Plan will
be determined pursuant to the committee system set forth in Article 3.

         6.2       Marketing Plan and Budget.

                  (a)       The CSC shall, subject to the provisions of Sections
3.4(c), (d), (e) and (f), develop a Marketing Plan (a "Marketing Plan") and a
marketing budget (a "Co-Promotion Budget") for the period from the Effective
Date through Launch of the first Product in the US Territory and for each Year
thereafter during the Co-Promotion Term consistent with Exhibit 6.2 and the
other terms of this Agreement. The first Marketing Plan shall be a pre-Launch
Marketing Plan, such Marketing Plan to be as approved by the JOC within six (6)
months of the

                                       39

<PAGE>

Effective Date (the "Pre-Launch Marketing Plan"). The Pre-Launch Marketing Plan
shall contain a pre-Launch Co-Promotion Budget covering the period of time from
the Effective Date through the Launch of the first Product in the US Territory
of up to $[**] or such higher amount as is agreed between the Parties. The
pre-Launch Co-Promotion Budget shall not exceed $[**] unless otherwise agreed by
both Parties, and neither Party's election to withhold such agreement shall be
subject to the other Party's decision-making authority. Neither Party shall
engage in any Co-Promotion activities except as provided in the applicable
Marketing Plan. Subsequent annual Marketing Plans will describe the plan for
commercialization of the Products in the US Territory, including: (a) general
strategies for the Detailing and marketing of the Products and allocation of
responsibilities for marketing activities; (b) Detail Requirements and sampling
activities, if any; (c) market and sales forecasts; (d) pricing and discounting
analysis; (e) advertising, public relations and other promotional programs,
including professional symposia and speaker and activity programs to be used in
the Co-Promotion of the Products; and (f) [**]. Each Marketing Plan and the
Co-Promotion Budget may, subject to the provisions of Sections 3.4(c), (d), (e)
and (f), be updated from time to time as deemed appropriate by the CSC.

                  (b)       Exhibit 5.1(b) also includes [**], which Product
Studies will be performed absent mutual agreement by the Parties to the
contrary. [**] these [**] of Products, [**].

         6.3       Detailing. The Parties shall be responsible for performing the
Detail Requirements specified in each then-current Marketing Plan.

         6.4       Detailing Reports. Each Party shall provide the other Party
and the CSC with a report as soon as practicable but in no event later than
forty-five (45) days following the end of each Quarter during the Co-Promotion
Term setting forth, in such detail and form as the Parties shall agree, the
number of Details made by such Party's Sales Representatives of Products in the

                                       40

<PAGE>

US Territory during such Quarter (each, a "Detailing Report"), provided,
however, that the Detailing Report for the fourth such Quarter in each Year
shall be cumulative and reflect the number of Details made by such Party's
respective Sales Representatives in the US Territory during such Year. Eyetech
covenants that it shall develop an internal system for the purpose of reporting
the number of Details of its Sales Representatives, and that it shall have such
system implemented by the time it begins Detailing the Products.

         6.5       Detail Shortfalls.

                  (a)       In the event that either Party fails to perform (such
Party, a "Shortfall Party") at least [**] percent ([**]%) of its Detail
Requirement in any Year as reported pursuant to Section 6.4 or verified pursuant
to Section 9.3, the Shortfall Party shall pay to the other Party as liquidated
damages an amount equal to the Detail Cost (as hereinafter defined), multiplied
by the applicable factor set forth below (the "Shortfall Factor") multiplied by
the total number of Details in the shortfall (the Detail Cost, multiplied by the
number of Details in the shortfall, multiplied by the Shortfall Factor, the
"Detail Shortfall Payment Amount"), on an incremental basis as set forth below:

                                       41

<PAGE>

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------
                                                                                Shortfall
                                            Detail Shortfall Level                 Factor
-----------------------------------------------------------------------------------------
<S>                                        <C>                                    <C>
For such portion of shortfall which is: > or = [**]% but < [**]% of Detail          [**]
                                         Requirement
-----------------------------------------------------------------------------------------
For such portion of shortfall which is: > or = [**]% but < [**]% of Detail          [**]
                                         Requirement
-----------------------------------------------------------------------------------------
For such portion of shortfall which is: < [**]% of Detail Requirement               [**]
-----------------------------------------------------------------------------------------
</TABLE>

For purposes of this Section 6.5, "Detail Cost" means $[**]. If a Party wishes
to verify the Details performed by the other Party in any Year, such Party shall
give notice to the other Party that the notifying Party wishes to verify Details
pursuant to Section 9.3 within forty-five (45) days after receipt of the other
Party's last Detailing Report set forth in Section 6.4 for such Year.

                  (b)       With respect to any Year in which onl


 
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