Chang Tsi’s litigation and non-litigation practice and 2 partners have earned high rankings again from LEGALBAND in the 2025 edition of Top Ranked Law Firms and Top Ranked Lawyers in China. The firm received Band 1 in IP litigation and non-litigation in the Top Ranked Law Firms, with managing partner Simon Tsi received Band 1 in IP litigation and Spring Chang received Band 1 in IP non-litigation in the Top Ranked Lawyers in China.
In March 2014, Unwired Planet brought an action against Huawei, Samsung and Google for the infringement of its UK patents, including 5 standard essential patents (“SEP”) covered by 2G, 3G and 4G telecommunication standards.
On February 26, 2019, Chang Tsi & Partners, along with administrative leaders with the China National Intellectual Property Administration (hereinafter referred to as "Administration"), industrial experts and representatives from other Chinese IP firms was invited to attend the symposium on opinion solicitation of "Regulations on managing trademark application and registration behaviors" (hereinafter referred to as "Regulations").
Asia Legal Business (ALB) announced the final ranking of 2019 ALB China Firms to Watch. With its outstanding performance in the IP field and impressive growth in business, Chang Tsi & Partners was included into the ranking and highly recommended by the ALB in 2019.
Early 2019，Chang Tsi Management Conference 2018 was held at Ayana Resort and Spa, Bali of Indonesia. This Conference gathered the managerial personnel of Chang Tsi from Beijing, Shanghai, Guangzhou and Shenzhen together for the previous experience and the future development.
The ruling of the subject case is a break from the norm.
Recently, the Legal 500 China region issued its list of 2018 rankings. This list covers 16 areas of law practice. Chang Tsi & Partners was recognized in the top tier in the field of intellectual property.
This is a typical patent invalidation case associated with patent infringement litigation.
This case is a typical non-use cancelation case, where the owner did not properly use its registered trademark.
Since December 2015, LEGO has begun placing advertisements widely at subway stations in Beijing, Shanghai, Guangzhou and other Chinese cities, among which the most noticeable slogans were the following two, i.e. v
On October 12, 2018, Guangzhou Intellectual Property Court (GIPC) made the second-instance judgment on the case involving a dispute against Guangzhou Xin Fan Cai Trading Co., Ltd. over the infringement of Levi`s trademark consisting of double arcs.
This case was between a renowned foreign company, Guinness World Records, and a famous domestic company, Chery Automobile, concerning trademark infringement and unfair competition.
This case a trademark rights infringement dispute.
