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:
"""
provisions of this Section 10.2 will survive termination or expiration of this Agreement and will continue for a period of 5 years from the date of that termination or expiration. 10.3 Pre-existing and Independently Developed Intellectual Property. Each party is and shall remain the owner of its Intellectual Property in existence as of the Effective Date and all such rights that a party acquires or develops independent of this Agreement ("Baseline IP"). 10.4 Ownership. (a) Except as specified elsewhere in Section 10.4, all rights in patents, inventions, processes, discoveries, and other research materials and any other novel or valuable information reflected in any medium that arise or are created during the course of this Agreement are the property of the creating party. (b) Any additions, improvements and enhancements to Vapotherm Baseline IP which are made during the course of this Agreement shall solely be the property of Vapotherm ("Vapotherm Inventions"). (c) Any additions, improvements and enhancements to Medica Baseline IP which are made during the course of this Agreement shall solely be the property of Medica ("Medica Inventions"). (d) It is understood and agreed that Vapotherm shall be free and without restriction to develop, market, license, and sell products and technology as it may see fit (including products and technology that may) or may not compete with the Cartridges), provided that Vapotherm strictly and fully complies with its obligations concerning Medica Confidential Information under Section 10.2 (Confidentiality). (e) It is understood and agreed that Medica shall be free and without restriction to develop, market, license, and sell products and technology based on Medica proprietary membrane with an intended use different from oxygen delivery humidification for patients. 10.5 [* * *] (b) [* * *] 10.6 Reservation of All Other Rights. Except as expressly set forth in this Agreement, nothing contained herein may be construed as doing the following: -11- [* * *] = Certain confidential information contained in this document, marked by brackets, has been omitted and filed separately with the Securities and Exchange Commission pursuant to Rule 406 of the Securities Act of 1933, as amended. (a) Giving Medica any rights to any Intellectual Property of Vapotherm or any other proprietary technology of Vapotherm (whether Vapotherm Baseline IP or Vapotherm Inventions arising in connection with this Agreement), including without limitation any of Vapotherm's patent rights relating to the design, development, testing, use and sale of the System or the Cartridge; or (b) Giving Vapotherm any rights to any Intellectual Property of Medica or any other proprietary technology of Medica (whether Medica Baseline IP or Medica Inventions arising in connection with this Agreement). ARTICLE 11 REPRESENTATIONS 11.1 Representations of Medica. Medica represents to Vapotherm as follows: (a) Medica is a corporation validly existing under the laws of its jurisdiction of organization with the power to own all of its properties and assets and to carry on its business as it is currently being conducted. (b) Medica has the power to execute and deliver this Agreement and to perform its obligations under this Agreement. (c) Medica's Chief Executive Officer, or Amministratore Unico (AU), has duly authorized Medica to execute and deliver this Agreement and perform its obligations under this Agreement, and no other corporate proceedings of Medica are necessary with respect thereto. (d) This Agreement constitutes its valid and binding obligation, enforceable in accordance with its terms, except as enforceability is limited by (A) any applicable bankruptcy, insolvency, reorganization, moratorium or similar law affecting creditors' rights generally, or (B) general principles of equity, whether considered in a proceeding in equity or at law. (e) Medica is not required to obtain the Consent of any Person, including the Consent of any party to any Contract to which it is a party, in connection with execution and delivery of this Agreement and performance of its obligations under this Agreement. (f) Medica is the rightful owner or licensee of any Intellectual Property that it may use in performing its obligations under this Agreement. (g) To Medica's knowledge, the Medica Baseline IP does not infringe or violate any patent, copyright, trademark, or any other proprietary right of a third party. (h) Medica's execution and delivery of this Agreement and performance of its obligations under this Agreement do not (A) violate any provision of its articles of incorporation or by-laws, as applicable, as currently in effect, (B) conflict with, result in a breach of, constitute a default under (or an event which, with notice or lapse of time or both, would constitute a default under), accelerate
"""

Extract the exact clause related to "Warranty Duration" from the excerpt above.