Chang Tsi & Partners

Chang Tsi & Partners is a "National Outstanding Law Firm" (nominated by the Ministry of Justice of China) with a strong reputation in intellectual property and litigation.

Since its establishment in 2002, Chang Tsi & Partners has become one of the leading law firms in China. The firm has consistently been referred to as “The Best IP Law Firm in China,” “China IP Law Firm,” and “Tier 1 IP Law Firm of the Year” by various international legal directories and business magazines such as Chambers & Partners, The Legal 500 Asia Pacific, and Asialaw Profiles. In 2024, Chang Tsi & Partners was listed as a highest-level AAAAA Patent Agency by the Beijing Patent Attorneys Association.

With over 350 professionals, including attorneys at law, patent attorneys, and trademark attorneys, Chang Tsi & Partners is based in Beijing, with fully-fledged offices in Shanghai and Shenzhen, and branch offices in Guangzhou, Guangxi, Chengdu, Hong Kong, Macau, Taiwan, the United States, and Korea. The firm has established an enviable reputation in intellectual property and litigation.

At Chang Tsi & Partners, you can find the knowledge, experience, and professionals to handle all aspects of law in both domestic and international matters. The firm is the trusted partner of many Chinese and international enterprises in developing strategic decisions and securing their interests both in China and overseas.

Practice Areas

Trademark prosecution and enforcement

Patent prosecution and enforcement

Litigation and dispute resolution

Copyright and domain names

Administrative protection

Foreign direct investment

Company legal counselling

Employment law

IP Commercial and Others

The firm is proud of its outstanding reputation and service, which is marked by professional and efficient work and successful results. Chang Tsi & Partners strives to provide comprehensive, one-stop, and multi-leveled legal services for its clients.

Comprehensive: The firm's intellectual property practice includes trademarks, patents, copyrights (including software), domain names, trade secrets, product packaging and decoration, management and transfer of intellectual property rights, unfair competition, consumer rights, advertising, and related services.

One-Stop: Chang Tsi & Partners is a leading IP law firm with expertise in both trademarks and patents. Its highly experienced and professional attorneys work in teams to provide clients with the most comprehensive and sophisticated advice. Whether its domestic or foreign clients face a difficult intellectual property issue of any kind, they can depend on Chang Tsi & Partners to come up with effective solutions and provide the best legal services.

Multi-Leveled: The firm provides comprehensive prosecution and enforcement services to domestic and international clients, including market surveillance, business investigations, administrative actions, customs enforcement, infringement litigation, and corporate intellectual property strategy development. This adds value to brand designs, trademark licensing, and intellectual property due diligence.