Chang Tsi & Partners

ESTABLISHED IN 2002

Managing Partner: Simon Tsi, Spring Chang
Number of Partners: 20
Number of associates: 350+

Firm Overview

Founded in 2002, Chang Tsi & Partners is a leading intellectual property boutique law firm headquartered in Beijing, with 350-plus professionals across 12 offices globally — Shanghai, Shenzhen, Guangzhou, Chengdu, Nanning, Hong Kong, Macau, Taiwan, Seoul, Singapore, together with offices in the US and Europe. The firm is consistently ranked by Chambers, The Legal 500, Asialaw, WTR 1000, and IAM Patent 1000, and several partners have repeatedly been named in China Business Law Journal’s A-List of Top 100 Lawyers.

Chang Tsi & Partners delivers full-cycle legal solutions covering patent prosecution, litigation, and portfolio strategy, alongside trademark and brand protection, copyright, corporate and commercial law, and global IP renewal and annuity services. The firm is particularly recognised for its strength in cross-border patent litigation, complex patent invalidation and re-examination proceedings, cross-border trademark portfolio strategy, and well-known trademark recognition, helping domestic and international clients protect and monetise their patents and trademarks across China, the Asia-Pacific region, and beyond. Combining international management practices, collaborative teams and intelligent case management systems, the firm provides customised, strategic and efficient legal solutions trusted by clients worldwide.

Key Practice Areas

Patent & technology; Design; Trademark; Copyright; IC layout-design protection; Plant variety protection; Litigation & dispute resolution; Corporate law & IP commercial; Global renewal and annuity services; and Asia hub services.