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:
"""
Company further represents that it has not received any written notice of a claim and otherwise has no knowledge that the methods described and claimed in the Patents and the Technical Information, and the products produced thereby in accordance with such information, violate or infringe upon the rights of any Person. Company shall indemnify and hold harmless Investor, Investors' Affiliates, and their officers and directors, and their direct and indirect customers, to the fullest extent permitted by applicable law, from and against any and all losses, liabilities, obligations, claims, contingencies, damages, diminution in value, deficiencies, actions, proceedings, taxes, costs and expenses, including all judgments, amounts paid in settlements, court costs and reasonable attorneys' fees and costs of investigation as incurred, arising out of or relating to any breach of any of the representations made in this Article 3.09. Page 5 of 15 Source: RARE ELEMENT RESOURCES LTD, SC 13D, 10/19/2017 Rare Element Resources Ltd. EXECUTION COPY IP Rights Agreement 3.10 Company represents and warrants that the definitions of Patents and Technical Information cover and include all patents, patent applications, patent rights, research and development information, inventions, know-how, trade secrets, and technical data used by the Company in its business at the Effective Date of this IP Agreement that relate to rare earth mineral processing and rare earth separation. IV. Prosecution of the Patents 4.00 Company will have the sole right to file, prosecute, and maintain all Patents covering the inventions that are the property of Company and will have the right to determine whether or not, and where, to file a patent application, to abandon the prosecution of any patent or patent application, or to discontinue the maintenance of any patent or patent application. Notwithstanding the foregoing, if Company elects to abandon any patent application, to not pay maintenance fees or annuities to keep a patent in force, or to otherwise take or fail to take any action that will result in a loss of patent rights, Company shall give Investor at least sixty (60) days prior written notice and an opportunity to take over the prosecution of the patent application that would be abandoned and/or pay the fees necessary to keep the patent in force and/or take any other action necessary to avoid the loss of patent rights. In the event that Investor takes over the prosecution of a patent application or maintenance of a patent under this Article 4.00, Company shall retain ownership of the patent application or patent, and the patent shall remain subject to this IP Agreement. Page 6 of 15 Source: RARE ELEMENT RESOURCES LTD, SC 13D, 10/19/2017 Rare Element Resources Ltd. EXECUTION COPY IP Rights Agreement V. Improvements 5.00 Improvements made or acquired solely by the Company ("Company Improvements") during the term of this IP Agreement shall be deemed Technical Information hereunder and shall be subject to the license provisions set forth in Article III for Technical Information. Any patent applications and any patents relating to any Company Improvements shall be deemed Patents hereunder and shall be subject to the license provisions set forth in Article III for Patents. 5.01 Investor shall own all right, title and interest in any Improvement made or acquired by the Investor ("Investor Improvement"). Investor hereby agrees to grant to Company a non-exclusive, irrevocable, royalty-free license under any Investor Improvement and any patent claiming such Investor Improvement, solely for use in rare earth mineral processing and rare earth separation, to make and have made, use, offer to sell, sell and import products made using the Investor Improvements. Such rights to Investor Improvements shall be solely for use by the Company and its Affiliates and shall not be transferable to any Third Party, except in connection with a merger, consolidation, or the sale or transfer of substantially all of Company's assets associated with performance under this IP Agreement. 5.02 Investor shall own all right, title and interest in any Improvement made jointly by Company and Investor ("Joint Improvements") during the term of this IP Agreement, and Company agrees to and hereby does assign to Investor any right, title and interest it may otherwise have in any Joint Improvement. 5.03 Investor hereby agrees to grant to Company a non-exclusive, irrevocable, royalty-free license under any Joint Improvement and any patent claiming such Joint Improvement solely for use in rare earth mineral processing and rare earth separation. Such rights to Joint Improvements shall be solely for use by the Company and shall not be transferable to any Third Party except in connection with
"""

Extract the exact clause related to "Rofr/Rofo/Rofn" from the excerpt above.

assistant: Notwithstanding the foregoing, if Company elects to abandon any patent application, to not pay maintenance fees or annuities to keep a patent in force, or to otherwise take or fail to take any action that will result in a loss of patent rights, Company shall give Investor at least sixty (60) days prior written notice and an opportunity to take over the prosecution of the patent application that would be abandoned and/or pay the fees necessary to keep the patent in force and/or take any other action necessary to avoid the loss of patent rights.