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:
"""
certificates of approval/registration in each country in the Territory other than the United States. EKR shall provide PPI with a copy of any other registration matters received from the appropriate Regulatory Authorities concerning maintenance, renewal or variations to the original certificates of approval/registration in each country in the Territory. Except as provided in Section 3.17, EKR shall be solely responsible for, and shall bear all costs associated with, all regulatory activities related to the development and approval of the Product in the countries of the Territory (including, after the Agreement Date, the United States) and shall own the Marketing Authorizations for the Product in each other country of the Territory. EKR will comply with all conditions and requirements attaching to such Marketing Authorizations. 4.2 Liaison with Regulatory Authorities. Pursuant to Section 4.1 above, EKR shall at its own cost and expense liaise with the relevant Regulatory Authorities in respect of each Marketing Authorization and notify PPI of all material communications relating thereto. The cost of submitting any data generated by any Phase IV studies conducted by EKR which is required to be filed with the FDA shall be borne by EKR and the cost of submitting any other data (including data submitted to support the use of the Product for additional indications) shall also be borne by EKR; -25- 4.3 Submission of Promotional Materials. Pursuant to Section 4.1 above, EKR shall at its own cost and expense submit and obtain the approvals of Regulatory Authorities in the Territory of Promotional Materials as required by Applicable Laws; 4.4 Pre-Launch and Post Launch Activities. Pursuant to Section 4.1 above, EKR shall at its own cost and expense carry out reasonable pre- launch market development and conduct such post-marketing clinical trials (as determined solely by EKR in its reasonable business judgment) in accordance with the Marketing Plan. Any data resulting from such trials shall be owned by EKR but shall be provided on a royalty-free license to PPI for use outside of the Territory. PPI shall cooperate with EKR in connection with such pre-launch and post launch activities as provided in sections 3.3 and 3.14 hereof; 4.5 Launch of Products. Pursuant to Section 4.1 above, EKR shall at its own cost and expense launch and achieve Commercial Launch of the Products in accordance with the Marketing Plan but no later than 18 months following receipt of Marketing Authorization in each country in the Territory provided however that EKR shall not be obligated to launch such Product in such country of the Territory where the approved pricing in such country provides EKR a gross margin of less than [**]% (after payment of Royalties, Additional Royalties and Cost of Goods) or where the launch of the Product in such country of the Territory as determined by EKR is not commercially reasonable. 4.6 Marketing Activities. EKR shall at its own cost and expense, during the term of this Agreement, promote, market, sell and distribute the Products to customers within the Territory and provided that PPI has supplied EKR with necessary quantities of Product, satisfy the demand for the Product throughout the Territory. EKR shall be solely responsible for, and shall bear all costs associated with, all marketing and selling activities related to the Products in the Territory; 4.7 SubDistributors. EKR shall at its own cost and expense maintain, or use reasonable commercial efforts to ensure that sub-distributors maintain, adequate sales and, where -26- appropriate, warehouse facilities and employ, or use reasonable commercial efforts to procure that sub-distributors employ, a sufficient number of experienced, trained and qualified personnel to promote the sale of the Product in the Territory and perform, or procure the performance of the activities set forth in the Marketing Plan; 4.8 Inventory and Promotional Materials. EKR shall maintain a sufficient inventory of Product and support material to reasonably fulfill the requirements of its customers in the Territory provided that, subject to Section 17.5, PPI shall comply with the Supply Agreement; 4.9 Records. EKR shall maintain adequate records concerning the sale of the Product as required by any applicable Regulatory Authority in the Territory; 4.10 Promotional Materials. EKR shall provide PPI with copies of the Promotional Materials proposed to be used in connection with the sale of the Products in the United States for approval, solely with respect to Trademark usage, (such approval not to be unreasonably withheld, conditioned or delayed) to the extent such Promotional Materials include any Trademark. EKR shall submit such Promotional Materials to PPI at least five (5) business days in
"""

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