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Eminent Practitioners
Provided by Haiyan Ren
REN Haiyan is a Partner at Wanhuida Intellectual Property and a Member of the firm’s Management Committee. 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 has already been 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 included in Managing IP's Top 250 Women in IP (2020 - 2025 edition) for her exceptional performance for her clients. She was named as an Outstanding Individual in prosecution and strategy (Gold Band) by the World Trademark Review in 2022, 2023 2024, and 2025. Since 2022, she has been inducted in the WTR Global Leaders (Private Practice) four years in a row. 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 since 2017. Since 2019, Ms. REN has been listed as a recommended IP Lawyer by Legal500. In 2023, 2024 and 2025, she is also listed as an "Eminent Practitioner" by Chambers & Partners in the category of "Intellectual Property: Non-litigation (PRC Firms)".
In her 30+ 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. As a sought-after speaker at IP-related seminars and conferences, she has given speeches at various global annual conferences organized by INTA, the International Anti-counterfeiting Coalition and others. She used to serve as the Co-chair of INTA China Global Advisory Council for the 2024-2025 term.
INTA
Special researcher of the Intangible Assets Management and Research Center of China University of Political Science and Law (CUPL)
Ms. REN authors or co-authors a dozen articles, with some of her recent articles including: “Several Issues We Should Know in the Battle against Bad-Faith Trademarks in China”, “Becoming more strategic in fighting bad faith filing in China” (asialaw Leading Lawyers 2018) and “Bad faith trademark filing” (asialaw Leading Lawyers 2017).
China
English, Chinese
Eminent Practitioner, Intellectual Property: Non-litigation (PRC Firms)
Chambers & Partners
2025
WTR Global Leaders (Private Practice)
World Trademark Review
2025
Top 250 Women in IP
Managing Intellectual Property
2025
IP STARS
Managing Intellectual Property
2025
Thought Leaders, IP - Trademarks
Lexology Index
2025
Provided by Chambers
Ren Haiyan is a member of Wanhuida's management committee. She boasts three decades of experience in trade marks and skilfully deals with infringement cases for high-profile clients.