Chang Tsi & Partners successfully represented Hitachi Astemo, Ltd. in filing an invalidation application against the trademark "日昭和(RI ZHAO HE in Chinese)" (No. 15325268).

The Taiwan Supreme Court has issued a powerful judgment (Burberry v. ETMall, 2025) that offers significant new direction for the calculation of trademark infringement damages.

As a global leader in multi-industry manufacturing, ILLINOIS TOOL WORKS INC. (hereinafter referred to as "ITW") has always prioritized trademark protection and consumer rights...

On June 2025, Chang Tsi & Partners had the privilege of attending the Non-use Cancellation Seminar organized by the China Trademark Association.

Vietnam follows a strict "first-to-file" system, prioritizing trademark rights based on the application date, not usage. Unregistered trademarks risk squatting. Under the Paris Convention, applicants filing in another member state can claim priority within six months, provided they declare it during application and submit supporting documents.

Infringement behaviors today have become increasingly diverse and concealed.

Recently, the case of Xu and Liu selling counterfeiting "TOTO" goods, represented by the Chang Tsi team, was upheld by the Beijing Dongcheng District People's Court. The case involved a total of over 2.09 million yuan...

On July 30, 2025, the Supreme People's Court of the P.R.C issued a Reply on the Application of Law in Cases Involving Patent Evaluation Reports...

In February 2026, China’s IP regulations and judicial practice showed a parallel two track trend: trade secret protection and patent priority examination...

October 2025 has proven to be a dynamic and instructive month in the realm of Chinese intellectual property litigation and enforcement. For international companies and their legal counsel...

In intellectual property (IP) management, protecting patent lifespans—especially for inventions and pharmaceuticals—is key to safeguarding R&D investments and market exclusivity.

On June 27, 2025, the third amendment to China's Anti-Unfair Competition Law (AUCL) was passed and will take effect on October 15, 2025. On the day of its adoption, we released an overview of the revision (accessible here).

The start of 2026 has brought many noteworthy IP developments in China. These changes are part of a broader evolution in China's approach toward a more transparent, credible, and sophisticated legal environment...

In the knowledge economy, intellectual property has become a core asset for enterprises, with service inventions directly linked to innovation vitality and competitive advantage. However, unclear ownership of employee inventions can lead to disputes, loss of core technologies, and obstacles to corporate growth.

In January 2026, the State Council promulgated the revised Regulations for the Implementation of the Drug Administration Law of the People's Republic of China...

Our client, an American company specializing in medical devices, recently discovered that a Chinese company had, at multiple industry exhibitions, used a Chinese transliteration of the client's English trademark...

On behalf of Edelman Shoe, Inc., a global leader in footwear, Chang Tsi & Partners has achieved another major victory in intellectual property protection. In a landmark case...

Pursuant to the requirements of the World Intellectual Property Organization (WIPO) and the announcement of the China National Intellectual Property Administration (CNIPA)...

In the global stage of patent portfolio planning, South Korea and China have always been important destinations for patent applications.

China's 2026 Government Work Report, together with the latest annual reports of the Supreme People's Court (SPC) and the Supreme People's Procuratorate (SPP)...