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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Territory; provided, however, the Parties hereby acknowledge that the restrictions set forth in this Section 2.3 shall not apply to any Affiliates of MMT (including Pfizer). Furthermore, [***]. 11 Source: SIGA TECHNOLOGIES INC, 8-K, 6/3/2019 2.4 Retained Rights. Notwithstanding anything herein to the contrary, SIGA retains the right on behalf of itself and its Affiliates, licensees or any Third Parties to Develop, Manufacture, supply, distribute and otherwise Commercialize the Product in Field the Territory, except that SIGA may not Promote or Sell or Offer to Sell the Product in the Field in the Territory to any Third Party; provided that SIGA may, at its sole cost and discretion engage in promotional activities regarding (but not enter into any Customer Contracts in respect of) the Product in support of MMT's efforts to Promote or Sell and Offer to Sell the Product. 2.5 No Implied Licenses. Except as explicitly set forth in this Agreement, neither Party will be deemed by estoppel or implication to have granted the other Party any license or other right to any intellectual property of such Party. For clarity, MMT acknowledges and agrees that SIGA has not granted any license to MMT hereunder to Develop or Manufacture the Product, and MMT does not have any right to Commercialize the Product, other than the license granted by SIGA to MMT to Promote the Product in the Field in the Territory as set forth in Section 2.1(a). 2.6 [***]. (a) [***]. ARTICLE 3 GOVERNANCE 3.1 Joint Steering Committee. (a) Formation and Role. Within thirty (30) days after the Effective Date, the Parties will establish a joint steering committee (the "JSC") to govern the activities of the Parties with respect to the Promotion and Commercialization of the Product in the Field in the Territory pursuant to this Agreement. The role of the JSC is: [***] (b) Members. [***]. (c) Meetings. [***]. (d) Alliance Managers. [***]. (e) Decision Making. [***]. 3.2 Good Faith. In conducting themselves on any committees, each representative of either Party, including the chairperson, will consider diligently, reasonably and in good faith all input received from the other Party, and will use commercially reasonably efforts to reach consensus on all matters before them. In exercising any decision-making authority granted to it under this ARTICLE 3, each Party will conduct its discussions in good faith with a view toward operating for the mutual benefit of the Parties and in furtherance of the Commercialization and Promotion of the Product in the Field in the Territory. Notwithstanding anything to the contrary in this Agreement, neither Party nor any of their respective Affiliates will be required to take, or will be penalized for not taking, any action that is not in compliance with such Party's ethical business practices and policies or that such Party reasonably believes is not in compliance with Laws. 12 Source: SIGA TECHNOLOGIES INC, 8-K, 6/3/2019 3.3 Scope of Governance. The Parties agree not to share or discuss any Confidential Information beyond the scope of the collaboration contemplated by this Agreement. Each Party acknowledges and agrees that the JSC members and participants will receive Confidential Information in connection with their service on the JSC. Each Party will ensure that its JSC members and its non-voting observers and participants are informed that they should regard all JSC-related information as Confidential Information, and are subject to obligations of confidentiality and non-disclosure no less stringent than those set forth in ARTICLE 10. ARTICLE 4 PROMOTION AND OTHER COMMERCIALIZATION 4.1 Promotion in the Territory. (a) [***] (b) MMT shall use Commercially Reasonable Efforts at its sole cost and expense to Promote the Product in the Field within the Territory in accordance with the then-current Business Plan; provided that MMT shall not Promote any Product within any Restricted Market or Discontinued Country. (c) MMT shall conduct all Promotion activities in accordance with applicable Laws, Pfizer policies and practices regarding advertising, marketing, promotional and other Product-specific communications, and the terms of this Agreement. MMT may prepare marketing, advertising, promotional materials and other communications relating to the Product for Promotion use in the Field in the Territory. All such materials shall be truthful and non-misleading, and in compliance with applicable Laws, and subject to review by SIGA through the JSC; provided that the final decision to use any approved materials will be at the sole discretion of MMT. (d) Subject to Section 4.2, SIGA shall provide reasonable assistance to MMT with respect to MMT's conduct of Promotion activities with respect to the Product in the Field in
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Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.