Chang Tsi & Partners




Chang Tsi & Partners’ IP team focuses on patents and trademarks. Managing partner Simon Tsi is experienced in arbitration, corporate, real estate, and IP matters. Founding partner Spring Chang specialises in IP rights, including prosecution and enforcement of trademarks, patents, copyright, and domain names. Freda Han joined the firm as partner from Jeekai & Partners. The firm established a new branch in Lingshui in August 2020. 

Intellectual property

Work highlights 

Represented Michael Kors (Switzerland) International and won the last instance of a trademark infringement casewherein all the claims brought by Shantou Chenghai Jianfa Handbag Craft Factory were rejected. 

Represented Hospital for Special Surgery (HHS), a hospital in New York City specialised in orthopaedic surgery and the treatment of rheumatologic conditions, on a series on administrative disputes over the review of the cancellation of the trademark right of HHS. 

Represented American sports equipment company Under Armour in trademark infringement and unfair competition against Fujian Ting Fei Long Sports Products Company. The case received worldwide attention from media and industry associations. 

Key clients 

Kohler CoMultivac Sepp Haggenmüller SE & CoVans