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:
"""
right and license, solely for use in the SpinCo Field, to (i) -9- use, reproduce, distribute, display, perform, make improvements and exploit Intellectual Property owned or controlled by Parent or a member of the Parent Group and currently used in the SpinCo Business, and (ii) make, have made, use, sell, offer to sell and import any goods and services incorporating, embodying or utilizing such Intellectual Property currently used in the SpinCo Business. Such license shall be transferrable subject to the foregoing restriction with any sale or transfer of a SpinCo business that utilizes such Intellectual Property, but, for the avoidance of doubt, such license shall not otherwise be sublicensable or transferable. Any transfer by SpinCo or a member of its Group shall require the transferee to agree pursuant to a written agreement to maintain any trade secrets and Information included in the transferred Intellectual Property in strict confidence. Such agreement shall prohibit any further transfer of rights by such party or any use of the transferred Intellectual Property outside the scope of the license granted to SpinCo herein. If SpinCo enters an agreement to transfer the license granted to it under this Section 3.2 in connection with any sale or transfer of a SpinCo business, then Parent and members of the Parent Group shall be made third party beneficiaries under such transfer agreement to enforce breaches of the license. 3.3 Neither Party shall make a trade secret of the other Party public or otherwise destroy or impair the trade secret status of such trade secret without the express, advance, written consent of the other Party. Any agreement by which a trade secret is transferred or sublicensed shall be subject to the same confidentiality requirements as stated herein. 3.4 No Implied Rights. As between the Parties, all right, title and interest in and to all Licensed SpinCo IP shall be owned by SpinCo and the other members of the SpinCo Group, and Parent shall not acquire, and nothing contained herein shall be construed as conferring, by implication, estoppel or otherwise, any license or other right, title or interest in or to such Licensed SpinCo IP or any other Intellectual Property owned by SpinCo or of any of its Group, except for the license granted to Parent pursuant to Section 3.1. 3.5 Improvements. For the avoidance of doubt, as between the Parties, Parent shall own all right, title and interest in and to any and all Improvements authored, developed, invented, reduced to practice or otherwise created by Parent or any member of the Parent Group and all Intellectual Property rights therein and thereto. 3.6 Enforcement of Licensed IP. (a) Control of Enforcement IP Actions. Except as may otherwise be mutually agreed by the Parties, as between the Parties, SpinCo shall have the right to enforce the Licensed SpinCo IP as follows: (i) SpinCo shall have the right, but not the obligation (through itself and/or through its designee), to control the initiation, conduct and, subject to this Section 3.6, settlement or other resolution, at its cost and expense and in its sole discretion, of any enforcement claim, demand, action, suit or proceeding, whether civil or criminal or in law or in equity (each, an "IP Action") relating to the Licensed SpinCo IP, including the right to communicate any objection or other form of challenge to any Third Party; and -10- (ii) if SpinCo does not initiate such an IP Action itself or through its designee with respect to infringement, misappropriation or other violation of any Licensed SpinCo IP within the Parent Field by a Third Party within ninety (90) days after receipt of a written request from Parent to assume control over the enforcement of such violation of such Licensed SpinCo IP inside the Parent Field, then Parent shall have, with the prior consent of SpinCo, which will not be unreasonably withheld, the right, but not the obligation, to bring and to control such IP Action (provided that if Parent does not do so within thirty (30) days after the end of such original ninety (90) day-deadline, the right to initiate and control an IP Action shall revert back to SpinCo and shall again be subject to the terms set forth above). For avoidance of doubt, Parent shall not have any right to initiate any IP Action with respect to infringement, misappropriation or other violation of any Licensed SpinCo IP by a Third Party except within the Parent Field. (b) Enforcement Action Process. (i) The Party initiating or otherwise controlling any enforcement IP
"""

Extract the exact clause related to "Joint Ip Ownership" from the excerpt above.