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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otherwise confirm with appropriate forms in the business management system. The official launch time of the business will be the time when Party A officially launches the billing service. 2.13 During the term of cooperation, Party A may suspend its cooperation with Party B if there is user complaint on Party B's service quality issue, which has resulted in adverse social impact; in serious cases, Party A may unilaterally terminate this Agreement. 2.14 Party A may, as requested by customers and market orders, review the business contents and prices filed by Party B, and may withhold the settlement of the information fee incurred by Party B's discretional change of charges. 2.15 Any complaints made by users with respect to the fee charging activities by Party B (except complaints attributable to Party A), once discovered, may be immediately notified by Party A in writing to Party B for correction, and Party A may take measures of fee refunding or suspension of fee charging according to relevant rules and as agreed herein. For complaints which Party B fail to make reasonable explanation, Party A may require Party B to reduce and exempt information fee of relevant users, and based on the seriousness of situation, require Party B to take relevant liabilities for breach of contract in accordance with relevant business management measures. 2.16 Party A shall be entitled to supervise the business conduct of Party B, and Party B shall assist Party A to avoid any adverse impact on Party A's normal business. If Party B's businessconduct causes adverse impact on Party A's normal business in violation of this Agreement, Party A may terminate this Agreement and Party B shall assume relevant liabilities for breach of contract. Article 3 Rights and Obligations of Party B 3.1 Party B shall be responsible for content development, platform building and maintenance, marketing and customer service of the cooperation business. 3.2 Party B guarantees to have the legal permits and qualifications necessary for the performance of the matters hereunder, including, without limitation, business license with legitimate business scope, qualification for providing contents/application services; Party B shall provide Party A with true and legitimate business permits for Internet information service and relevant business and such other credentials, creditability certificate, certificate for legitimacy of copyright sources, adequate after-sale service system, price approval, bank account and such other documents. Page 4 of 29 Jiangsu Telecom Contract No.: JSXCS1200166CC000 3.3 Party B must strictly comply with relevant industry laws, rules and standards promulgated by the State, including, without limitation, the PRC Telecommunications Regulations, Administrative Measures on Internet Information Service, Interim Provisions on the Administration of Internet Publishing, Interim Provisions on the Administration of Internet Websites' Engaging in News Publication Services, and such other laws, regulations, policies and industry management rules, and shall not distribute and disseminate illegal, unhealthy, reactionary information or advertisement or such other junk information on the Internet. 3.4 Party B guarantees that it enjoys the intellectual property and civil rights on all the information/application service resources provided by it, has obtained the license and authorization from relevant right owners, and does not infringe on any person's copyright, trademark right, patent right, trade secrets or other intellectual property rights, other property rights, right of portrait or other personal right. 3.5 Party B shall comply with the various rules and requirements in the business standards, management measures, quality and/or service standards formulated or amended by Party A, which shall be equally binding as this Agreement. 3.6 Party B guarantees that the prices of the various business it provides are in line with the pricing policies of the State, and it will be responsible for any price complaints made by relevant administrative authority or users. 3.7 Party B may negotiate the mode of cooperation with Party A, and may determine the operation strategy for its mobile game service business, provided, however that the pricing of its business shall be approved by Party A and filed to relevant authority for record. 3.8 In case of any issues of Party B's own systems (such as WAP website or game server) that affect Party A's communications system, Party B shall submit to the connection control by Party A thereon, and any consequence thus incurred shall be fully taken by Party B itself. 3.9 Party B shall undertake allliabilities arising from the wireless value-added business provided by any third party to the users in any form whatsoever through Party B's maintenance interface. Party B shall not transfer the business interface provided by Party A
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Extract the exact clause related to "Ip Ownership Assignment" from the excerpt above.

assistant: Not found.