• Who We Are

    Caihe Law Firm | Tang Song IP Firm

    T&C includes Caihe Law Firm and Tangsong IP Firm. As a law firm, Caihe focuses its practice on IP litigation, arbitration and FTO analysis. Tangsong, as a professional IP firm, specializes in patent and trademark prosecution, global IP portfolio planning and commercialization. T&C provides clients with comprehensive, diversified and high-quality services. T&C will continue to deepen expertise to help clients achieve protection of their intellectual property and commercial rights and interests.

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    News Updates

  • 2026-03-08

    Caihe Secures Major Victory in Patent Invalidation Dispute

    Caihe Law Firm recently secured a significant victory before the Beijing Intellectual Property Court in a highly contested patent invalidation administrative dispute (Case No. (2025) 京73行初8677号). The Court issued a first-instance judgment...
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  • 2026-02-15

    T&C Secures Global Patent Fortress for World’s First cAMP-Biased GLP-1

    The National Medical Products Administration (NMPA) of China has officially approved the New Drug Application (NDA) for Ecnoglutide Injection (Brand Name: Xianyida®), developed by Sciwind Biosciences Co., Ltd. ("Sciwind")...
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  • 2026-01-06

    Congratulations to ADAMA on the victory in a pesticide patent invalidation case

    Recently, the China National Intellectual Property Administration (CNIPA) issued Examination Decision No. 610449 regarding a request for invalidation filed by a third party against the patent titled “Bactericidal Composition with Synergistic Effect” ...
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  • 2025-12-18

    CNIPA Rules in Favor of T&C’s Client in "Meinian" Trademark Disput

    Recently,theChinaNationalIntellectualPropertyAdministration(CNIPA)issuedRulingNo.2025]0000132772regardingtheinvalidationrequestforTrademarkNo.61628116,"美年美好"(MeinianMeihao)...
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  • 2025-11-15

    T&C Secures Full Victories in Trademark Opposition & Revocation Cases

    Recently, T&C achieved remarkable successes in intellectual property rights protection, winning all represented trademark opposition cases and trademark revocation cases for non-use for three consecutive years. The opposed trademarks were ruled...
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    • Practice Areas

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    • office
    • Beijing
    • Xi’an
    • Chengdu

    For professional, efficient and comprehensive intellectual property and supporting legal services, you are welcome to contact us at any time. Relying on the extensive experience and profound expertise of our professional team, T&C will listen to your needs, match precise services accordingly, and provide tailored solutions to fully protect your intellectual property rights and commercial development.

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