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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in the world for import or sale in the Field in the Territory in each case, under the PPI IP provided that PPI retains all rights necessary to manufacture and supply the Products to EKR in accordance with this Agreement and the Supply Agreement. Such grant by PPI shall include the right of EKR to market the Product in the Territory during the Term as an EKR product using in addition to the Trademarks, EKR's own trademarks, trade dress, trade names and other proprietary designations in combination with the Trademarks. 2.3 Grant of Trademark Rights. PPI hereby grants to EKR a royalty free and exclusive license (with the right to sublicense) to use the Trademarks in the Territory solely in connection with the exercise of the Distribution Rights in the Territory during the Term (and thereafter as set forth in Section 17.4) and EKR shall market and sell the Products under the Trademarks. For the avoidance of doubt, the term "exclusive" for the -14- purposes of Sections 2.1, 2.2 and 2.3 means to the exclusion of all others, including PPI and its Affiliates, except to the extent necessary to enable PPI to perform its specific obligations under this Agreement and the Supply Agreement. Notwithstanding the foregoing, nothing contained herein shall prohibit PPI from utilizing the Trademarks in the Territory in connection with its business for the sole purpose of signifying that PPI is the manufacturer of the Products for EKR. 2.4 Transfer of Domain Names. On the Effective Date, PPI has transferred the Domain Names to EKR for use in connection with the exercise of the Distribution Rights. PPI has provided EKR with reasonable assistance as was necessary to effectuate the transfer of the Domain Names. Upon any termination or expiration of this Agreement, EKR shall promptly transfer the Domain Names back to PPI. 2.5 Condition of Appointment. The acceptance of forecasts and orders for the Products (as provided in the Supply Agreement), and PPI's obligation to supply the Product to EKR shall at all times be conditioned by the Marketing Authorization for the Product being in force in the country of Territory to which such acceptance and order relates. 3. Undertakings of PPI 3.1 Manufacturing Activities. Subject to Section 17.5, PPI shall manufacture and supply, or procure the manufacture and supply of, the Product in accordance with the terms and conditions of the Supply Agreement. 3.2 Transfer of Transferred NDA. Effective as of the Agreement Date, PPI hereby sells, transfers, conveys and assigns to EKR all right, title and interest in and to [**] (the "Transferred NDA"). Each Party shall, within five (5) business days after the Agreement Date, file with the FDA a notice letter, substantially in the form attached as Schedule XI(A) or Schedule XI(B) (as applicable), regarding the transfer to EKR of the Transferred NDA. PPI represents, warrants and covenants that: (i) prior to the Agreement Date, it has provided EKR with complete, up- to-date copies of the Transferred NDA and all material correspondence with Regulatory Authorities in the -15- Territory in connection with the Transferred NDA (including, but not limited to, any periodic and annual report submissions, and all adverse event reports and data) and (ii) on the Agreement Date, EKR shall receive sole ownership of, and good and valid title to, the Transferred NDA, free and clear of any liens and encumbrances. For the avoidance of doubt, nothing in this Agreement regarding the appointment of EKR as PPI's distributor of the Products shall be construed to diminish any rights of EKR as holder of the Transferred NDA. Upon termination of this Agreement for any reason except by EKR pursuant to Section 16.1(a), EKR shall promptly transfer the Transferred NDA and related regulatory documentation to PPI in accordance with Section 17.1(e). 3.3 Maintenance of Transferred NDA. The Parties acknowledge that prior to the Agreement Date, PPI was responsible at its own cost and expense for maintaining and updating the Transferred NDA, and agree that PPI shall retain all liabilities with respect to the foregoing obligations to the extent relating to periods prior to the Agreement Date. Commencing as of the Agreement Date, EKR shall, at its own cost and expense, maintain and update the Transferred NDA and be responsible for all liabilities with respect to the foregoing obligations to the extent relating to periods after the Agreement Date. 3.4 Assistance. PPI shall, at EKR's cost and expense, provide EKR with all assistance, information and guidance, including where appropriate direct access to employees of and consultants
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Extract the exact clause related to "Anti-Assignment" from the excerpt above.