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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Exhibit 10.4 EXECUTION VERSION INTELLECTUAL PROPERTY AGREEMENT by and among UNITED TECHNOLOGIES CORPORATION, OTIS WORLDWIDE CORPORATION and CARRIER GLOBAL CORPORATION Dated as of April 2, 2020 TABLE OF CONTENTS ARTICLE I DEFINITIONS 2 1.1 Defined Terms 2 ARTICLE II ASSIGNMENT OF SOLELY OWNED INTELLECTUAL PROPERTY RIGHTS 7 2.1 Assigned Intellectual Property Rights 7 ARTICLE III LICENSING OF INTELLECTUAL PROPERTY RIGHTS 8 3.1 Licensed Intellectual Property Rights 8 3.2 Reserved Intellectual Property Rights 10 3.3 No Rescission 10 ARTICLE IV TRADEMARKS 10 4.1 Ownership of United Technologies Trademarks 10 4.2 Use of United Technologies Trademarks 11 4.3 Special Trademark Provisions. 12 ARTICLE V EXCLUDED AGREEMENTS 12 5.1 No Change to Excluded Agreements 12 ARTICLE VI CONFIDENTIALITY 12 6.1 Received Information and Materials 12 6.2 Confidential Information 12 6.3 Obligations 13 6.4 Termination of UTC NDA 13 ARTICLE VII LIMITATIONS AND DISCLAIMERS 13 7.1 Subsequent Delivery of Intellectual Property Rights 13 7.2 No Additional Obligations 14 7.3 DISCLAIMER 14 7.4 Limitations of Liability 14 ARTICLE VIII GOVERNING LAW AND DISPUTE RESOLUTION 15 8.1 Governing Law 15 8.2 Alternative Dispute Resolution 15 8.3 Confidentiality 13 8.4 Equitable Relief 13 i ARTICLE IX GENERAL PROVISIONS 16 9.1 Entire Agreement; Conflict Among Agreements 16 9.2 Assignment and Change of Control; Successor and Assigns 16 9.3 Bankruptcy 17 9.4 Amendments and Waivers 17 9.5 Notice 18 9.6 Severability 18 9.7 Counterparts 18 9.8 Further Assurances 18 9.9 Interpretation 19 ii INTELLECTUAL PROPERTY AGREEMENT This INTELLECTUAL PROPERTY AGREEMENT (this "Agreement"), dated as of April 2, 2020, is by and among United Technologies Corporation, a Delaware corporation ("UTC"), Otis Worldwide Corporation, a Delaware corporation ("Otis"), and Carrier Global Corporation, a Delaware corporation ("Carrier") (each, a "Party" and together, the "Parties"). RECITALS WHEREAS, UTC, Otis and Carrier have entered into that certain Separation and Distribution Agreement, of even date herewith (the "SDA"), pursuant to which UTC and its subsidiaries will undertake a series of transactions following which UTC will separate into three independent, publicly traded companies: (i) UTC, comprising Collins Aerospace and Pratt & Whitney, a systems supplier to the commercial aerospace and defense industry, (ii) Otis, a manufacturer of people-moving products, such as elevators, escalators and moving walkways, and (iii) Carrier, a provider of HVAC, refrigeration, fire, security and building automation technologies; WHEREAS, pursuant to Section 2.10 of the SDA, UTC, Otis and Carrier agreed to enter into this Agreement; WHEREAS, each of the Parties and their respective affiliates are currently owners of, and in possession of, certain Intellectual Property Rights (as defined herein), which Intellectual Property Rights may have been developed or acquired by such Party independently, or jointly with either or both the other Parties, or assigned to it by either or both of the other Parties prior to the date hereof; WHEREAS, a result of the corporate relationship between each of the Parties, and not necessarily pursuant to a written agreement, prior to the date hereof, each Party has had access to, and the right to use certain Intellectual Property Rights of one or both of the other Parties as required for its business; WHEREAS, in connection with the transactions contemplated by the SDA, the Parties wish to confirm their respective ownership of certain Intellectual Property Rights (as defined herein), and with respect to certain other Intellectual Property Rights transfer ownership thereof from an Assignor Party (as defined herein) to an Assignee Party (as defined herein), and each Assignee Party wishes to receive ownership of such Intellectual Property Rights; and WHEREAS, in connection with the transactions contemplated by the SDA, the Parties wish to either grant, or confirm the prior grants of, certain rights and licenses with respect to certain Intellectual Property Rights from each Licensor Party (as defined herein) to a Licensee Party (as defined herein), and each Licensee Party wishes to receive such license grants on the terms set forth herein. NOW, THEREFORE, in consideration of the mutual promises hereinafter set forth and in the SDA (and other agreements entered into in connection with the SDA), and other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, and intending to be legally bound, the Parties hereby agree as follows: ARTICLE I DEFINITIONS 1.1 Defined Terms. For the purposes of this Agreement, the following terms shall have the following meanings. Capitalized terms used but not otherwise defined in this Article I or elsewhere in this Agreement shall have the meaning ascribed to such terms in the SDA. For the avoidance of doubt, for purposes of Section 2.1, Section 3.1, and
"""

Extract the exact clause related to "Effective Date" from the excerpt above.

assistant: Not found.