system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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applications and registrations related to any of the rights set forth in the foregoing clauses (i) through (iv); provided, however, that as used in this Agreement, the term "Intellectual Property" expressly excludes rights in trademarks, trade names, service marks, service names, design marks, logos, slogans, trade dress, or similar rights with respect to indicators of origin, whether registered or unregistered, as well as rights in internet domain names, uniform resource locators and e-mail addresses. 1.14. "Inventions" means conceptions, ideas, innovations, discoveries, inventions, processes, machines, formulae, formulations, biological materials, molecules, compounds, compositions, improvements, enhancements, modifications, technological developments, know-how, show-how, methods, techniques, systems, designs, production system, plans, source code, object code and documentation pertaining thereto, including, without limitation, functional specifications, object libraries, design documentation, technical documentation, statements of principles of operations, schematics, programmers' guides, and other documentation, data, programs and information and works of authorship, whether or not patentable, copyrightable or susceptible to any other form of legal protection. 1.15. "Minimum Payment" means the amounts set forth on Attachment B as payable by Integra to PcoMed in each Minimum Payment Period. 1.16. "Minimum Payment Period" has the meaning set forth on attached Attachment B. 3 *** Portions of this page have been omitted pursuant to a request for Confidential Treatment filed separately with the Commission. 1.17. "Net Sales" means the gross amount of all revenues invoiced and received by Integra and its Affiliates from Integra Customers from the Sale of Treated Integra Products and Partially Treated Integra Products, less the following deductions (to the extent otherwise then or previously included in the gross amounts invoiced and in respect of which no previous deduction was taken): (i) amounts taken or accrued for sales, distributor or other commissions allowed, discounts allowed dealers, trade and/or quantity and cash discounts; (ii) refunds, rebates, chargebacks, replacements or credits and allowances actually allowed or granted to purchasers on account of contractual obligations, rejections, returns, or billing errors and for uncollectible amounts (except to the extent later collected) on Sales; (iii) sales, use and/or other excise taxes, import and/or export duties paid, tariffs, and any other governmental tax or charge (except income taxes) imposed on or at the time of production, importation, use, or sale of the Treated Integra Product or Partially Treated Integra Product, including any value added taxes, and taxes on medical devices; (iv) shipping insurance costs and prepaid transportation and/or freight charges. Net Sales shall exclude any amounts Integra or its Affiliates receive for Treated Integra Product or Partially Treated Integra Product that are used for clinical trials required or reasonably deemed to be desirable for Regulatory Approval or additional product indications in any country. 1.18. "Non-Treated Integra Product" means an Integra Product that does not utilize or embody, in whole or in part, the PcoMed Surface Modification Technology. 1.19. "Notice of Initial Acceptance of First Product Order" means Integra's acceptance of the Treated Integra Product or Partially Treated Integra Product pursuant to the First Product Order. Such acceptance shall be issued in the form of Attachment C by Integra within ten (10) business days of receipt by Integra or its Affiliates of product (and related quality and testing documentation) meeting specifications mutually agreed upon by Integra and PcoMed. 1.20. "Partially Treated Integra Product" means an Integra Product that (i) utilizes or embodies, in whole or in part, the PcoMed Surface Modification Technology and (ii) a portion of which (not including radiographic or radiopaque markers) is formed from a material other than PEEK or PAEK and does not utilize or embody the PcoMed Surface Modification Technology. 1.21. "PcoMed Regulatory Data" means PcoMed information associated with regulatory procedures relating to the PcoMed Surface Modification Technology, including bench and animal data, submission data and methodologies, responses of Regulatory Authorities to submissions, information pertaining to such submissions, and additional data generated as required for US Marketing Clearance, EU Marketing Clearance or commercial launch of a product using or embodying the Surface Modification Technology. 1.22. "PcoMed Surface Modification Technology" means a proprietary PcoMed osteoconductive commercially pure titanium *** molecular surface modification of PEEK (polyetheretherkeytone), PEKK (polyetherkeytonekeytone), and/or PAEK (polyaryletherkeytone) materials as illustrated in Attachment A. 1.23. "PcoMed Technology" means any technology owned, licensed or controlled by PcoMed as of the Effective Date, including the (i) PcoMed Surface Modification Technology and (ii) coating, surface, application, surface modification and pretreatment technology and knowhow, and all technology Derived by PcoMed during or after the Term, together with any improvements, enhancements, or extensions of or to any of the foregoing, and Intellectual Property Rights
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Extract the exact clause related to "Expiration Date" from the excerpt above.