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Haiyan Ren

Work +86 10 6892 1000
Wanhuida Peksung


Senior Partner


REN Haiyan is the 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. She is the most experienced trademark attorney of the firm, starting practising as a trademark attorney in 1994 and progressively extending her practice to design patent counseling and strategic planning for integrated IP rights protection.

In 1999, Ms. REN co-founded WAN HUI DA with a number of other experienced attorneys. As one of the founding partners, she has made an indelible contribution to the firm, which is already ranked as a top tier IP firm by various professional publications. As one of the firm's main representatives, Ms. REN has been nominated as a leading individual practitioner in the field of intellectual property in China. She was named as an “Outstanding Individual” by the World Trademark Review 1000 in 2011, 2012 and 2017. She was also nominated as a “Leading individual” by Chambers and Partners in 2009, 2011 throughout 2013. She was the Exclusive winner of 2012 International Law Office Client Choice Awards (IP field, China) and an “IP STAR” in China rated by Managing Intellectual Property in 2015 and 2017.

In her 23 years of practice, Ms. REN has handled high-profile cases relating to trademark and design patent filing, registration, litigation and dispute resolution. As the joint head of the firm’s trademark practice group and the managing coordinator for all anti-counterfeiting, infringement and unfair competition cases, she has guided a team of more than 300 trademark and patent attorneys and attorneys-at-law. She has advised numerous Fortune 500 companies on trademark profile auditing, strategic planning for trademark and design protection, domain name disputes, unfair competition cases, IP border protection by Customs and criminal enforcement.

Ms. REN was elected to the International Trademark Association (INTA) China Trademark Office Subcommittee of the Trademark Office Practices Committee for her significant experience in the field. Ms. REN is also a sought-after speaker at IP-related seminars and conferences throughout China and has given speeches at various global annual conferences organized by INTA, the International Anti-counterfeiting Coalition and others.

Membership & Qualification 

  • Member of INTA
  • Special researcher of the Intangible Assets Management and Research Center of China University of Political Science and Law (CUPL)


  • Leading IP Individual by Chambers & Partners (2009, 2011-2013);
  • World Leading Trademark Professional by World Trademark Review (2011, 2012 & 2017)
  • Exclusive winner of 2012 ILO Client Choice Awards (IP field, China)
  • IP STAR in China by prestigious international IP media Managing Intellectual Property (2015 & 2017)
  • Leading Lawyer in the practice area of intellectual property in China by Asialaw Profiles - premium legal directory for domestic law firms in Asia-Pacific (2016)
  • Leading Intellectual Property Lawyer in China by “China Law & Practice” - a leader in specialized industry news and information (2015)


English, Chinese



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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    - Wanhuida Peksung

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