Chang Tsi & Partners

Beijing Office

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This content is provided by Chang Tsi & Partners.

Chairman: Ms Spring Chang
Managing Partner: Mr Simon Tsi
Number of lawyers: 210
Number of partners: 11
Languages: English, Japanese, Mandarin, Cantonese

Firm Overview:
Since 2002, Chang Tsi & Partners has been guiding multinational companies with its expertise in Chinese law and business. Headquartered in Beijing, with branches in the finance capital Shanghai, trade capital Guangzhou, tech capital Shenzhen, Hong Kong, Taiwan, and two liaison partners in the United States, the firm has over 350 employees, with 210 lawyers in China.

The guiding principle of Chang Tsi & Partners is to secure clients’ rights in a changing China. Chang Tsi & Partners is a tier one law firm in China with proven strength in intellectual property and dispute resolution. We provide the full scope of services from prosecution to litigation, for patents, trademarks, copyrights, trade secrets and domain names. The firm has been recommended by IAM 1000 for both patent prosecution and enforcement for years. It has been assisting Fortune 500 companies for over 15 years. Amazon recognized Chang Tsi & Partners as the most ‘Up to Speed Quickly’ outside counsel. Twitter awarded Chang Tsi & Partners the most ‘Out of the Box’ law firm for its creative legal solutions. The firm has obtained favorable court judgments before the China Supreme Court, the highest judicial authorities, on behalf of our U.S. clients BestBuy Enterprises Inc., Mondelez, Johnson & Johnson, etc. The firm also works closely with many law major firms in the US. Chang Tsi & Partners has been ranked as a leading firm by Chambers Asia Pacific (consecutive years) and recommended as a ‘Top-Tier Intellectual Property Firm’ by Legal 500 Asia Pacific (consecutive years); Founding partner Spring Chang was recognised by Chambers Asia Pacific as a Band 1 IP lawyer in China and awarded “Global Leaders” for 2020 by World Trademark Review (WTR).

Managing partner Simon Tsi has been ranked as one of the top 15 litigators and top 15 IP lawyers by Asian Legal Business and listed in ‘The A-List China’s Top 100 Lawyers’ by China Business Law Journal. 

Practice Areas
- Patent Prosecution & Enforcement
- Trademark Prosecution & Enforcement
- Litigation & Dispute Resolution
- Copyright & Domain Names
- Administrative Protection
- Foreign Direct Investment
- Company Legal Counseling

Main Areas of Practice:

Intellectual Property:

Intellectual property is a core area of focus for Chang Tsi & Partners. The firm’s IP practice is distinguished by its significant trademark, copyright, patent and domain name victories in both contentious and non-contentious matters, establishing intellectual property as the core of its business - providing one stop, multi-level, tailored legal services, facilitating customer communication and establishing relationships with customers. It coordinates all sorts of business, responding to emails within 24 hours, establishing a complete marketing department giving customer background information, business development, and industry status based on research. Based on this research, the firm properly maintains and cares for its customers.

The backgrounds of the firm’s patent attorneys covers every technological field and some of the team leaders have enjoyed long experience as examiners at the China Patent Office. The firm handles many patent filings in China for foreign and Chinese domestic clients, such as Air China, Baidu, Illinois Tool Works Inc., etc.
Key Clients: Baidu, Graco
Contact: Chenyan Wu

The firm was founded on trademark prosecution and enforcement work. The firm has worked with the top IP firms in the US for over 15 years. Industries served range from manufacturing, telecommunication, financial services, entertainment, publishing, jewellery, apparel, toys and more. Chang Tsi & Partners are experienced in managing various types of trademark portfolio and working directly with multinational enterprises.
Key Clients: Johnson & Johnson, Michael Kors, Levi’s, Conocophillips, Reckitt Benckiser, Air China
Contact: Spring Chang, Simon Tsi, Ason Zhang, Michael Fu

Dispute Resolution:
Litigation and arbitration are two of Chang Tsi & Partners’ core services. With years of experience in litigation and disputes of all types, attorneys at Chang Tsi & Partners have successfully resolved many complicated and difficult cases for their clients. In recent years, Chang Tsi & Partners was able to secure rights for its clients in two appeals filed before the Supreme People’s Court of P.R.C.
Key Clients: Under Armour, Sketchers
Contact: Simon Tsi, Michael Fu

Chang Tsi & Partners serves as perennial legal counsel to provide legal services for enterprises. Its lawyers have more than 15 years of experience and outstanding records in corporate establishment, contract review, IP Due Diligence, IP Licensing etc.
Key Clients: Illinois Tool Works, CITI bank
Contact: Wendy Wu