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Jiancheng JIANG

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Wanhuida Peksung


Senior Partner


Mr. Jiancheng JIANG is a Senior Partner at Wanhuida Peksung, a leading Chinese IP service powerhouse formed by the merger of WAN HUI DA Law Firm & IP Agency and PEKSUNG IP Ltd in November 2016. He is the Managing Partner of PEKSUNG IP Ltd.

Mr. JIANG is a well-respected figure in China’s intellectual property circle. He embarked on the career of practicing patent in 1987 when he joined a pioneer IP agency of the country, China Patent Agent (HK) Ltd. He served the firm for 16 years consecutively in the capacity of Patent Attorney, Manager of Chemical Department, Deputy Director of Beijing Office and Assistant General Manager.

Mr. JIANG founded in 2003 PEKSUNG IP Ltd. in response to surging client demands and market dynamics. He has been leading PEKSUNG’s practice group in tailoring agile, reliable and efficient legal solutions to cater to the intellectual property needs of multinationals and Fortune 500 corporation clients including Bayer, BASF, Allergan, POSCO and Porsche in China.

Mr. JIANG has significant experience in advising clients in various patent prosecution and contentious matters. His expertise primarily focuses on prosecuting and litigating complex patent disputes (reexamination, invalidation and infringement), and on planning, advising and executing corporate strategies for the defense and the enforcement of patents in a wide variety of technical fields, particularly biochemistry, biotechnology, pharmaceutics, and organic chemistry.

Mr. JIANG is Vice President of International Federation of Intellectual Property Attorneys (FICPI) China and Vice President of All-China Patent Attorneys Association (ACPAA).


  • “Recent PRB Decisions on Pharma and Biotech Inventions”, Asia IP, October 2015
  • “Patents”, Chapter 1 in IP Protection in China, Donna P. Suchy, ed., 1st ed., ABA Publishing, 2015 (Co-author)
  • “Closer to Best Practice”, China IP Focus, 2015
  • “US and China: Approaches to Experimental Use”, The Patent Lawyer, January/February 2015 (Co-author)
  • “Precedent Fails to Help Applicants”, China IP Focus, 2014
  • “Clarification in Dealing With Patent Errors”, China IP Focus, 2013
  • “Eastern Promise”, IP Litigation Special Report, a supplement to The Patent Lawyer, October 2012 (Co-author)
  • “Higher and Higher: the Five Year Plan”, World Intellectual Property Review e-Digest, 2012
  • “Biotech, Pharma and Chemical Invention Patent Practice Q&A”, The Asian Lawyer, January 2012
  • “Patent Protection in China”, Intellectual Property Magazine, September 2011 (Co-author)
  • “Understanding the Service Invention-creation System”, China IP Focus, 2011 (Co-author)
  • “Rules on Genetic Resources Tightened”, Managing Intellectual Property, July/August 2010
  • “Patentability of Medical Use Inventions”, IP Focus Asia, 2009
  • “The Impact of the Third Amendment to the Patent Law on the Bio-pharmaceutical Industry”, Asia Law IP Review, April 2008
  • “Due Balance Between Patent Right and Public Interests in China”, Asia Law IP Review, January 2008
  • Contributor of “Jurisdiction Report - China” in World Intellectual Property Review since September 2009


English, Chinese




  • B.Sc. in Biochemistry, Peking University (1984)
  • M.Sc. in Biochemistry, Graduate School of Chinese Academy of Sciences (1987)
  • Studied the European patent law, particularly the protection of biotechnology-related inventions at the European Patent Office (1993)
  • Studied US patent law in the USA (1996)
  • Completed integrated courses of law in Renmin University of China (1999)

China: Intellectual property

Intellectual property: PRC firms

Within: Intellectual property: PRC firms

Wanhuida Peksung adeptly ‘handles complex cases, with close communication between teams, with law enforcement agencies and clients’. It attracts a wide range of patent-related work, however, trade mark matters are a traditional strength. Names to note include founding partner Gang Bai, Hui Huang, who ‘works rigorously and carefully, achieving outstanding performance within a limited time frame’; Haiyan Ren, who focuses on trade mark and design patent filings and registrations, and Jiancheng Jiang, who handles patent prosecution and litigation matters. Key sectors of expertise include life sciences, pharmaceuticals, food and beverages and fashion. L’Oréal, Microsoft, Michelin and New Balance count among the team's clients. The practice has been bolstered by the arrival of Johnson Li from Intewig & Partners.

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Legal Developments by:
Wanhuida Peksung

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