Established in 2002, Chang Tsi & Partners is a leading intellectual property law firm in China, recognized as a National Outstanding Law Firm by China’s Ministry of Justice and consistently acknowledged by leading international legal directories, including Chambers and Partners, The Legal 500 Asia Pacific and World Trademark Review (WTR).
Headquartered in Beijing, the firm has branch offices in Shanghai and Shenzhen, with additional offices and operations across Guangzhou, Guangxi, Chengdu, Hong Kong, Macau, Taiwan, the United States, South Korea and Singapore. Our team comprises more than 350 lawyers, patent attorneys and trademark attorneys. We maintain close engagement with international organizations such as the World Intellectual Property Organization (WIPO), the International Trademark Association (INTA) and the American Bar Association (ABA). We are also a designated Chinese intellectual property law firm and agency for the Embassy of Canada in China, and a sponsor member of the Japan Intellectual Property Association (JIPA). Through these relationships, we continue to expand our international professional network and strengthen cross-border IP cooperation.
Our practice spans intellectual property, litigation and dispute resolution, commercial law and related legal services. Intellectual property remains our core focus, encompassing trademark and patent prosecution, administrative and judicial enforcement of IP rights, IP commercialization and strategic IP planning. With a strong presence in China and an established profile in the global IP community, Chang Tsi combines specialist expertise with a collaborative, firm-wide management structure. Supported by coordinated teams across offices and practice areas and advanced digital work systems, we deliver tailored, comprehensive and integrated legal solutions to clients in China and around the world. Our approach is designed to address clients’ needs at every stage of the IP lifecycle, from rights acquisition and portfolio strategy to enforcement, dispute resolution and commercialization.
Providing tailor-made legal solution packages with customers' interests as the top priority.
Experienced: Experienced lawyers and experienced team
Strategic: The #1 highest success rate in opposition in China
Efficient: All client emails are replied to within 1 working day, enabled by a highly advanced computerized system and competent legal experts
Comprehensive: A one-stop solution for all your legal needs in China
At Chang Tsi & Partners, we make sure that we understand your needs and we tailor our legal strategy to anticipate any complications and overcome challenges. With more than 350 professionals (lawyers, paralegals and administrative specialists) we provide our legal services while meeting the highest international standards.
We provide a comprehensive service specialized in prosecution and enforcement to our clients globally. The Chang Tsi team not only covers infringement litigation and trademark licensing, but also handles diversified services such as market surveillance, business investigations, administrative actions, custom enforcement, IP due diligence and IP strategy development.
We are the one-stop shop for all your legal issues. We not only are the leading experts in China in infringement litigation and trademark licensing, but we also provide an extensive range of personalized legal solutions.
Recognized as one of the top-tier IP law firms in China for more than a decade, Chang Tsi & Partners strives to provide innovative and comprehensive legal solutions for clients who seek to expand their interests and secure their legal rights.
“Be the best lawyer in China and be the best law firm in China!” is the Chang Tsi & Partners motto. The objective of the firm is to consistently exceed the clients' expectations and always meet their needs.
The Chang Tsi & Partners team led by the founding partners, Spring Chang and Simon Tsi, is renowned for its creative strategies and analytic problem-solving skills.
Qualified to practice in other jurisdictions, our attorneys maximize the profit of clients in different areas through the consideration of various perspectives.
Chang Tsi & Partners has provided legal services for the Fortune 500 companies for nearly two decades. We are privileged to have earned the trust and confidence of companies from America, Europe, Asia Pacific, and Africa in a diverse range of fields such as Energy, Sport & Entertainment, Manufacturing, Retail, Transportation & Tourism, Food & Beverages as well as Banking & Financial Services.
“Spring and her colleagues at Chang Tsi & Partners have become our invaluable advisors. The complex nature of business in China requires not only sound legal advice but also a pragmatic business approach. Spring and Nana routinely provide great practical insight and astute legal guidance in a holistic manner. Notably, they adopt a creative approach in handling significant and complex matters. Moreover, they are diligent in their approach and very responsive to our inquiries. They proactively communicate about matters, help manage the docket judiciously and try to resolve issues expeditiously. Finally, they are receptive to our guidance and collaborative in their approach.”
“Chang Tsi & Partners is comprised of highly effective IP professionals. The team members have consistently demonstrated superior judgment, exceptional analytical skills and high integrity. Without exception, they have demonstrated unparalleled understanding of China trademark law and regulations. They are extremely prompt and thorough in their responses to our inquiries and requests. Their collective and deep understanding of China practice provides the competence for issues which are deeply valued. For example, their advice on subtle prosecution issues have turned out to be key considerations in our transactional analysis and guidance for our in-house clients."
