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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either of Vyera or CytoDyn. 1.106 "Trademarks" has the meaning set forth in Section 5.4(a). 1.107 "Transition Services" has the meaning set forth in Section 11.7(e)(ii). 1.108 "Transition Services Agreement" has the meaning set forth in Section 11.7(e)(i). 1.109 "U.S." means the United States of America, including its territories and possessions, including Puerto Rico. 1.110 "Valid Claim" means a claim of an issued and unexpired Patent included within the CytoDyn Patents to the extent such claim has not been revoked, held invalid or unenforceable by a patent office, court or other governmental agency of competent jurisdiction in a final order, from which no further appeal can be taken, and which claim has not been disclaimed, denied or admitted to be invalid or unenforceable through reissue, re-examination or disclaimer or otherwise. 1.111 "Vyera" has the meaning set forth in the introductory paragraph. 1.112 "Vyera Indemnitee" has the meaning set forth in Section 13.2. 1.113 "Vyera Reserved Dispute" has the meaning set forth in Section 12.4. ARTICLE 2 LICENSES; PROPRIETARY RIGHTS 2.1 Grant of Licenses. (a) License to Vyera. CytoDyn hereby grants to Vyera, and Vyera hereby accepts, an exclusive royalty-bearing license (or sublicense, as the case may be), under the CytoDyn Patents, the CytoDyn Know-How and the Inventions (if any) solely to Commercialize, use, have used, offer for sale and sell Licensed Products in the Field in the Territory. (b) Sublicense Rights. The licenses granted to Vyera under this Agreement shall not be transferrable and/or sublicensable without CytoDyn's written consent, which it may grant, condition or withhold in its sole discretion. Source: CYTODYN INC., 10-Q, 1/9/2020 2.2 Proprietary Rights. (a) Title. This Agreement does not convey to Vyera any rights in any CytoDyn Patents, CytoDyn Know-How, Regulatory Approvals, Regulatory Materials, Regulatory Documentation, or Inventions by implication, estoppel or otherwise except for the rights expressly granted in Section 2.1(a). Title to the CytoDyn Patents, the CytoDyn Know-How, Regulatory Approvals, Regulatory Materials, Regulatory Documentation, and all Inventions shall at all times remain vested in CytoDyn. Except as otherwise provided in Section 2.2(b) with respect to Inventions, this Agreement does not convey to CytoDyn any rights in any Vyera Know-How or any Vyera Patents by implication, estoppel or otherwise. (b) Inventions. All right, title and interest in and to any and all Inventions that would be necessary or useful to Develop, Manufacture or Commercialize a Licensed Product (and/or an improvement, modification or line extension thereof) will be owned by CytoDyn. To the fullest extent permitted by law, Vyera shall, and hereby does, assign all of its right title and interest in and to any and all Inventions to CytoDyn. In the event that such assignment would be unlawful, Vyera shall, and hereby does, grant to CytoDyn an exclusive, irrevocable, worldwide, sublicensable (including through multiple tiers), transferrable (without consent) royalty free license to any and all right, title and/or interest that it may have in or to an Invention. Vyera will, upon reasonable request of CytoDyn, and at CytoDyn's expense, execute or cause to be executed, any assignments, filings, applications or other documents that CytoDyn may require to evidence its rights in the Inventions. 2.3 Disclosure; Patent Prosecution. (a) Each of CytoDyn and Vyera shall promptly disclose to the other in writing reasonably detailed written reports describing any Invention that might, under the applicable U.S. patent laws, be patentable and constitute an Invention. (b) As between the Parties, CytoDyn shall be responsible, at its sole expense and in its sole discretion, for the preparation, filing, prosecution, and maintenance of any and all CytoDyn Patents (including, for clarity, any CytoDyn Patents that are the result of an Invention). CytoDyn will keep Vyera reasonably informed of the status of such efforts. 2.4 Enforcement and Defense of Patents. (a) Each Party shall give the other Party notice, promptly after becoming aware, of any infringement of CytoDyn Patents, where such infringement concerns the Commercialization, manufacture, importation, use, offer for sale or sale of a Licensed Product in the Field in the Territory (a "Licensed Product Infringement"). CytoDyn shall have the sole right to initiate and prosecute any legal action at its sole expense in its name with respect to CytoDyn Patents, and to also control the defense of any declaratory judgment action relating to such Licensed Product Infringement; provided that no settlement, or consent judgment or other voluntary final disposition of the suit that relates to the Licensed Product in the Field in the Territory may be entered into without the consent of Vyera, which consent shall not be
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Extract the exact clause related to "Ip Ownership Assignment" from the excerpt above.

assistant: To the fullest extent permitted by law, Vyera shall, and hereby does, assign all of its right title and interest in and to any and all Inventions to CytoDyn