Established in 2003, Beijing ZBSD Patent & Trademark Agent Ltd (hereinafter referred to as “ZBSD”) has been committed to providing its clients with valuable services of high quality, holding ‘Honesty, Diligence and Efficiency’ as its business concepts. Its excellent services in IP area have won the trust and praise of its clients.

ZBSD’ headquarter is located in Beijing, with branches in Xi’an,  Chengdu, Shenyang,Changsha, Xuzhou, Taiyuan, Nanyang and Hebi, with over 450 staff members, including 11 lawyers, 113 patent attorneys, 202 patent engineers, 12 trademark attorneys and over 120 management and supporting staffs.

Each year, ZBSD represents over 15,000 patent cases (90% being invention patents) and over 4,000 trademark cases including application, reexamination, opposition and litigation.

Among the top 100 agencies in terms of the number of closed Chinese invention patent cases in 2025, ZBSD ranked sixth with a grant rate of 81.12%.

Among the top 150 agencies by closed Chinese invention patent cases in 2024, ZBSD ranked fifth with a grant rate of 79.23%.

Among the top 100 agencies in terms of the number of closed China invention patent cases in 2023, ZBSD ranked second in terms of the grant rate of 81.2%.

Among all those cases represented by ZBSD, 90% are from the best domestic companies in their respective industry.

ZBSD ranked first in the 2025 global ranking of the volume of published PCT patent filings.

As the end of 2025, ZBSD had represented a total of 12,966 PCT applications, ranking eighth among patent agencies in China.

ZBSD maintains good business relationships with over 500 IP agencies and law firms from over 100 countries and regions around the globe.

ZBSD was selected in the IAM 1000 in 2025.

ZBSD has been included in “Leading IP Firms in china” by MIP (Managing Intellectual Property), a renowned IP management magazine in UK, for many consecutive years.

ZBSD was selected as a “Four-Star Patent Agency” by China Intellectual Property News.

ZBSD received Special Contribution Award for IP agencies of Haidian District, issued by Beijing Municipal Intellectual Property Office (100,000 RMB reward).

ZBSD was selected as a AAAAA patent agency by Beijing Patent Attorneys Association.

Since its establishment, ZBSD has actively participated in lots of activities sponsored by domestic and overseas IP associations, including the International Association for the Protection of Intellectual Property ( AIPPI), the International Trademark Association (INTA), the All-China Patent Attorneys Association (ACPAA), the Beijing Intellectual Property Society (BIPS), and the Japan Intellectual Property Association (JIPA).

Its working languages include Chinese, English and Japanese.