China PRC Patents Rankings 2025

AFD China Intellectual Property Law Office

Firm overview:

AFD China Intellectual Property Law Office is a dependable choice for non-contentious patent matters in China. The firm has offices in Beijing and the US, and was rated as a ‘5A’ patent agency by the Beijing Patent Attorneys Association in 2024.

The firm’s highly active and efficient patent prosecution department earns it a place in this year’s rankings for non-contentious work. AFD features highly among IP firms in the statistics of annual filings of Chinese invention patent applications, PCT international applications and overseas filings for domestic clients. Partnerships with IP firms in over 100 countries and regions worldwide enable the team to provide patent services in clients’ targeted jurisdictions.

AFD’s legal team of 12 attorneys-at-law and around 30 patent litigation attorneys support clients with contentious matters in the courts and patent offices. The firm’s litigation arm, Beijing BHTD Law Firm, was founded in 2011.

Team overview:

AFD’s patent team includes around 200 experienced patent attorneys, patent engineers, and patent litigation attorneys, with around 90% holding a master’s degree or above.

Founder of the firm Xia Zheng has worked in IP for more than three decades, with her practice covering IP prosecution, post-grant proceedings, enforcement and litigation, and strategic counselling. A patent attorney and attorney-at-law, Zheng founded Beijing BHTD Law Firm and oversees the collaboration between the two firms.