► Practice Areas

Mr Yan's main practice areas include: intellectual property litigation and arbitration; patent and trademark invalidation declarations; intellectual property administrative law enforcement cases; and intellectual property legal counsel services. He has represented a large number of cases involving patent invalidation declarations and administrative litigation thereof, patent infringement, ownership disputes and other civil cases, and has provided enterprises with numerous consulting reports on patent portfolio, early warning and infringement analysis. The cases he represented have been repeatedly selected into the Top Ten Cases of the Patent Reexamination Board of CNIPA.

Mr. Yan used to work in Patent Reexamination Board and Department of Treaty and Law of the CNIPA for more than 10 years. He examined hundreds of patent invalidation cases in the fields of medical biotechnology, utility models and industrial designs, andparticipated in the fourth revision of the Patent Law and a number of research projects of CNIPA, and published several articles in China Invention & Patent, Intellectual Property News and CNIPA Examination Business Newsletter. He has rich experience in patent law interpretation, patent infringement determination and government affairs coordination.

► Education / Training

Yunnan University, Master of Science (Microbiology)

► Work Experience

· 2025: Lungtin Law Firm (Shanghai) as Partner

· 2021: Beijing Yuzhi Law Firm as Executive Director

· 2018: Beijing Zhongwen Law Firm as Lawyer

· 2007: The State Intellectual Property Office, Reexamination and Invalidation Department

► Social Affiliations

Standing Committee Member of Pharmaceutical Engineering Professional Committee of Guangdong Pharmaceutical Association

► Representative Achievements

Patent Infringement Litigation

· Infringement litigation and invalidation declaration of patent of General Motors involving control arm bushings (Won)

· Patent infringement litigation and invalidation declaration between Kawin Technology and Gilead regarding Sofosbuvir (China's first patent infringement litigation regarding metabolite, Won)

· Patent infringement litigation and invalidation declaration between Hisun Pharmaceutical and Astellas (Involving preliminary injunction, infringement litigation and invalidation declaratio, Settled)

· Infringement litigation of patent of Bayer Pharmaceuticals (Won)

Patent Ownership and Trade Secrets

· Litigation between HuayuTongfang and Shandong Xinlong regarding chemical equipment and processes (Involving patent ownership disputes, trade secrets in cooperative development, contract disputes, etc., Won)

Invention Patent Invalidation Declaration and Administrative Litigation

· Patent invalidation declaration case of a cyclone dry coal powder gasifier (Selected into the Top Ten Reexamination and Invalidation Cases, defending the gold award patent)

· Patent invalidation declaration and administrative litigation for the crystal form of Entresto between CSPC Pharmaceutical and Novartis (China's first patent invalidation declaration for co-crystals)

· Patent invalidation declaration and administrative litigation for the crystal form of Sunitinib Malate between CSPC Pharmaceutical and Boehringer Ingelheim

· Patent invalidation declaration and administrative litigation for butylphthalide cyclodextrin inclusion complex between CSPC Pharmaceutical and Livzon Pharmaceutical (Selected into the Top Ten Reexamination and Invalidation Cases)

· Patent invalidation declaration and administrative litigation for GlaxoSmithKline's vaccines

· Patent invalidation declaration for Regeneron's bispecific antibodies (A rare case in the biological field where all claims were declared invalid)

· Patent invalidation declaration for Alnylam's siRNA (Selected into the Top Ten Reexamination and Invalidation Cases)

· Patent invalidation declaration for Genentech' disulfide bond reduction technology

Industrial Design Patent Invalidation Declaration

· Invalidation declaration for seat design patent

· Invalidation declaration for "Tiancili" design patent

Analysis Report Projects

· Due diligence reports for chemical drug technology transactions (Several items)

· Freedom-to-operate (FTO) analysis reports for chemical drugs (Several items)

· Freedom-to-operate (FTO) analysis report for vaccine drugs

· Freedom-to-operate (FTO) analysis report for antibody drugs

· Patent portfolio and patent infringement risk analysis report for a certain air purifier

Trademark Cases

· Administrative litigation for "Woniu Insurance" trademark reexamination (Including administrative litigation, trademark application and trademark revocation)

· Administrative litigation for "Sino-creativity" trademark reexamination

► Speeches / Lectures / Publications

· Lecturer at Patent Agent Professional Improvement Training Course of Guangxi Zhuang Autonomous Region

· Lecturer at the DIA Advanced Seminar on "Drug R&D and Registration Strategies and Requirements"

· Speaker at the DIA RAC Regulatory Tripartite Talk

· Lecturer at the Guangdong Pharmaceutical-Engineering Transformation Senior Technology Manager Training Course

· Lecturer at the Technology Manager Training Course of Guangzhou Bio-island Intellectual Property Operation Center

· Lecturer at the Intellectual Property Lecture of Guangzhou High-tech Zone International Bio-island Group company

· Can Patents Escort the Successful Listing of Chinese Antibodies?, published in Intellectual Property News, 2019

· On the Liability Undertaking of Indirect Patent Infringement Acts, published in China Invention & Patent, 2017

► Media Interviews

1. Interviewed by Intellectual Property News on the "Degarelix Patent Invalidation Declaration Case"

2. Interviewed by Intellectual Property News on the Sci-Tech Innovation Board listing of Edding Pharmaceutical

► Working Languages

Chinese / English

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