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, Singapore 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.

Network Memberships:

• International Trademark Association (INTA)
• American Intellectual Property Law Association (AIPLA)
• Intellectual Property (AIPPI)
• Association of European Trade Mark Owners (MARQUES)
• International Association of Restructuring
• Insolvency and Bankruptcy Professionals
• Intellectual Property Owners (IPO)
• European Community Trademark Association (ECTA)

ESG and diversity achievements

At Chang Tsi & Partners, diversity and inclusion (DEI) are core values. Over 50% of our partners and more than two-thirds of our staff are women, supported by mentorship programs and leadership training. We adhere to the Women's Empowerment Principles by UN Women and the UN Global Compact, ensuring equal opportunities for all employees, including those with disabilities. Our global team speaks multiple languages, allowing us to serve a diverse client base. In 2024, we established an Employee Assistance Fund to provide additional support for employees and their families, reflecting our "people-first" philosophy. Our DEI efforts have been recognized with accolades such as "Best Employer in China" by Thomson Reuters and the "Harmonious Labor Relations Advanced Unit" award in Beijing. Additionally, our Managing Partner, Spring Chang, is a prominent speaker at international legal forums, advocating for diversity and inclusion.