Feng (Janet) Zheng

Ranked in China: Domestic
IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

Bronze - Individuals: litigation

Not only is Wanhuida one of China’s leading prosecution shops, but its competitive contentious offering also attracts a group of staunch followers. Bayer, among many other leading companies across the globe, has entrusted the patent team with its critical patent disputes. Acting on this brief is Tiejun Tang, who draws on her experience as a CNIPA examiner to tackle tricky biotech-related litigations. Other notable litigators include S Sam Li, Shuhua Zhang and Feng (Janet) Zheng. Previously a clerk for the Maryland Court of Appeals, Li applies his vast knowledge of both China and US patent law to anchor the patent group with aplomb. Commercially minded Zhang has a stellar track record of success in front of the Supreme People’s Court, while Zheng is a favourite among multinationals and domestic giants when it comes to patent enforcement and invalidation proceedings. Over on the prosecution front, the drafting team has all disciplines on lock. Taking the lead is Xiaoling Duan, who, in 1988, started her career as a patent examiner at the State Intellectual Property Office – the predecessor of the CNIPA. Guangzhou-based Minnan Xie makes her debut in the IAM Patent 1000 this year with her outstanding performance in patent prosecution and complete command of biochemical knowledge.

Feng (Janet) Zheng's Profile

Feng (Janet) Zheng is a partner at Wanhuida Intellectual Property’s Beijing office. Her practice focuses on patent litigation (including invention patents, utility models and designs). She also serves clients in respect of patent licensing, trade secret, trademark, copyright, unfair competition and antitrust matters. She has rich experience in serving foreign corporations.

Ms Zheng’s work includes:

  • representing a foreign standard-essential patent owner in patent protection matters, including infringement litigation and negotiations;
  • representing a foreign client in the semiconductor area in patent protection matters, including infringement litigation and related patent invalidity matters;
  • representing a well-known US IT company in various patent protection matters, including preparing a series of patent infringement litigations;
  • defending an Australian medical device company in a series of patent infringement litigations initiated by a Chinese competitor before the Shanghai IP Court, and representing the company in invalidation proceedings against the related patents;
  • representing a leading sportswear company in various IP rights protection and associated patent invalidity proceedings;
  • defending a leading US chemical company in patent infringement litigation before the Shanghai IP Court, as well as in filing the related patent invalidity proceedings;
  • representing a leading US biochemical company in a cluster of litigations against a domestic competitor, including copyright infringement, unfair competition and patent infringement before the courts in Shanghai;
  • defending a US medical device company in a series of patent infringement litigations and antitrust litigation filed by a Chinese competitor before the courts in Shenzhen; and
  • defending a leading Swedish home furnishing retailer in patent infringement litigation before the Guangzhou IP Court and in the associated patent validity dispute.

In 2020 Ms Zheng made her debut in IAM Patent 1000 as a recommended individual for litigation. She also made the list in 2021 and 2022. In 2021 she was also recognised as one of the 2021 ALB China Rising Lawyers by Asian Legal Business.

Firm Profile

Wanhuida Intellectual Property is a leading IP service provider in China. Made up of two main legal entities, Wanhuida IP Agency and Wanhuida Law Firm, Wanhuida employs some 450 individuals, working exclusively in the field of intellectual property, with a presence in all major IP hubs in China. It is home to more than 120 litigation lawyers, 70 patent attorneys, 90 trademark attorneys and other professionals, including investigators and supporting staff. Many of them are recognised leaders in their respective fields.

Wanhuida is a leading provider of a full range of IP law services in China, from registration of patents and trademarks to litigation of patents, technology disputes, trademarks, unfair competition and other IP-related matters. Over the years, our prosecution team has helped clients to prosecute numerous patent and trademark applications and obtain enforceable patent and trademark rights with a high rate of success. We have litigated hundreds of cases concerning patent infringement and validity, trademark registration, ownership and infringement, unfair competition, trade secrets infringement, patent ownership and other disputes relating to technology and intellectual property, protecting and defending our clients’ interests and helping to expand China’s legal frontiers. We also advise our clients on IP strategy, patent clearance and validity assessment, due diligence and counselling on all IP matters.

In the patent area, over 120 professionals with experience in patent litigation, prosecution and counselling are ready to serve a broad client base. Many have more than 10 years of experience. Some have experience working for Chinese courts, the China National Intellectual Property Administration and the Patent Re-examination and Invalidation Department, while some also worked in the industry or for research institutions before joining private practice. These diverse backgrounds strengthen our understanding of clients and the Chinese system, enabling us to deliver services effectively. Our patent attorneys cover substantially all technical fields, including chemistry, biochemistry, pharmaceutics, materials science, medical devices, metallurgy, physics, electronics, software, telecommunication and mechanical engineering. Most of them have advanced technical education and obtained their doctorate and master’s degrees from the best universities in China.

At Wanhuida, we are at the leading edge of patent litigation. We have abundant experience in litigating patent and technology matters at all levels of court up to the Supreme People’s Court. Our patent litigation service also covers validity and re-examination disputes before the Patent Re-examination and Invalidation Department and their subsequent administrative litigation. Some of our cases involve parallel litigation in China and in other jurisdictions. Many of our cases are recognised as groundbreaking, as we not only creatively protect the interests of our clients, but also help to expand the IP legal frontiers. Some of our patent cases are selected by courts or agencies as exemplary cases. They include cases selected as “Guiding Cases of the Supreme People’s Court on IPR Trial”, “Annual Report of the Supreme People’s Court on Intellectual Property Cases”, “Top 10/50 IPR Cases of the Chinese Courts” (released annually by the Supreme People’s Court) and  “10 Exemplary Cases of the Patent Re-examination and Invalidation Department”. These cases have contributed to patent law development in subjects such as claim construction, claim amendment, inventiveness determination and sufficient disclosure. Besides judicial remedial approach, we are also experienced in administrative enforcement, working with government bodies such as local IP offices, the Administration for Market Regulation, Customs and the food and drug regulatory authorities.

Besides working on client matters, Wanhuida also participates in China’s development of patent and technology laws. We have been closely associated with the legislative progress of Chinese IP rights laws and regulations and continue to play an active advisory role in the improvement of the Chinese legal and regulatory environment. Our contribution to the initial drafting and subsequent amendments to China’s major IP laws and the interpretation of court decisions has given us outstanding recognition from government bodies and the judiciary. It has put Wanhuida in a privileged position to anticipate changes in the legislation and the enforcement of IP laws for the benefit of our clients.

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