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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Company will make available to Distributor comprehensive technical support for the first Product Year. Distributor will have direct access to (a) the Company's engineering consultants and (b) the patent holder's technicians. Company's representatives will make themselves available three days per month in the first Product Year to consult with and train Distributor. All costs and expenses associated with the services provided to Distributor hereunder, including travel, lodging, engineering consultants' fees and employee time will be paid by Distributor. (C) Company will timely furnish all of Distributor's requirements for Products within the Market, provided it is given adequate notice of Distributor's requirements and a full and fair opportunity to fulfill the same. 5.2 Representations and Warranties of Distributor. (A) Distributor shall be entirely responsible for learning, understanding and training about the Products, the costs of advertising and promoting the Products in the Market through the Term of this Agreement. Distributor shall not issue, print or disseminate any information about the Products in the first Product Year without the express written consent of the Company. (B) Distributor will not engage the services of any engineering or consulting firm without the express written consent of the Company. 5.3 Indemnification. Company and Distributor agree to indemnify, defend and hold each other harmless from any and all suits, claims, obligations, liabilities, damages, losses and the like (including attorneys' fees and costs) relating to or arising out of: (A) any breach of any material representations, warranties, covenants, obligations, agreements or duties in connection with this Agreement; (b) any negligence or fault; (c) any violation by either of them of the patent, copyright, trademark or other Page -10- intellectual property rights of third parties. In addition, Company agrees to indemnify, defend and hold harmless Distributor from and against all suits, claims, obligations, liabilities, damages, losses and the like (including attorneys' fees and costs) arising out of or related to Company's manufacture or design of the Products, provided that Distributor is not at fault in connection with the same, and Distributor agrees to indemnify, defend and hold harmless Company from and against all suits, claims, obligations, liabilities, damages, losses and the like (including a attorneys' fees and costs) arising out of or related to Distributor's sales, marketing practices or unauthorized Product alteration (provided that Company is not at fault in connection with same). 5.4 Product Liability Insurance. Company will carry a reasonable amount of product liability insurance through a reasonably acceptable products liability insurance company and will name the Distributor as an additional insured under that policy. Company will make reasonable efforts to procure a policy, which is non-cancelable, except upon thirty (30) days, advance notice to the Distributor. 5.5 No License. The Distributor acknowledges and agrees the except as provided by Section 1.2 of this Agreement, this Agreement will not be construed as granting by implication, estopped or otherwise any license or other right of use with respect to any present or future patent, copyright, trademark, trade name or other proprietary right owned by or licensed to the Company or any of its affiliates. 5.6 No Action to Invalidate. During the Term of this Agreement and for three years thereafter, the Distributor (on behalf of itself and each of its affiliates) agrees not to commence, or provide any information to or otherwise assist any person or entity in connection with, any suit, action or proceeding contesting the ownership, validity or enforceability of any patent, copyright, trademark, trade name or other propriety right owned by or licensed to the Company, whether currently existing or hereinafter invented, developed or acquired unless required to by court order. The Distributor agrees to inform the Company promptly and cooperate with the Company in the event the Distributor obtains knowledge of any such suit, action or proceeding which has been initiated or is contemplated by any other person or entity. 5.7 Nonsolicitation. (A) During the Term of this Agreement and for a period of twelve (12) months thereafter, the Distributor (on behalf of itself, each of its affiliates and each of their respective representatives) agrees that it will not directly or indirectly solicit or hire any executive, managerial or technical employee of the Company or any of its affiliates. (B) Distributor further agrees that it will not interfere with or otherwise disrupt the business relations between the Company or nay of its affiliates and any of their current or prospective customers, suppliers or distributors, during the Page -11- Term of the Agreement and for a period of eighteen (18) months thereafter, nor will
"""

Extract the exact clause related to "Covenant Not To Sue" from the excerpt above.

assistant: During the Term of this Agreement and for three years thereafter, the Distributor (on behalf of itself and each of its affiliates) agrees not to commence, or provide any information to or otherwise assist any person or entity in connection with, any suit, action or proceeding contesting the ownership, validity or enforceability of any patent, copyright, trademark, trade name or other propriety right owned by or licensed to the Company, whether currently existing or hereinafter invented, developed or acquired unless required to by court order.