China PRC Patents Rankings 2025

China Science Patent & Trademark Agent

Firm overview:

Originally an agent working for and under the Chinese Academy of Sciences, China Science Patent & Trademark Agent has grown into a large intellectual property firm with significant resources.

The firm’s patent practice is divided into groups, which are electrical engineering; mechanical engineering; chemistry, pharmaceuticals and biotechnology; three groups with Japanese as the working language (covering electrical, mechanical and chemical); domestic business; and an application department.

This provides clients with specialist experts in their area of business. Patent attorneys support the firm’s Litigation Group in patent invalidations and court trials when they arise.

Team overview:

China Science has over 400 professionals and staff working out of offices in Beijing, Shanghai, Tianjin, Wuhan, Jinan, Changsha, Hong Kong, Osaka, Tokyo, Washington, DC and Paris.

Wei Zhao is a top patent attorney at the firm, having handled hundreds of patent applications for globally renowned companies. Zhao has expertise across numerous technical fields and is familiar with prosecution procedures at the European Patent Office (EPO) and US Patent and Trademark Office (USPTO).

Key matters:

  • Business method patent application: Administrative litigation case

China Science handled an administrative patent litigation case concerning the rejection and reexamination of subject-matter eligibility of a business method patent application. The Supreme People’s Court determined that the application complied with the provisions of China’s patent law. The case drew much attention in the IP community and was selected for the Judgment Digests of the Intellectual Property Court of the Supreme People’s Court (2024).