Tsar & Tsai Law Firm

Tsar & Tsai Law Firm is a top-tier full-service law firm in Taiwan. The firm has more than 80 professionals specialising in various legal fields. The firm has a long history of international practice and is known for its superior-quality work. It has maintained a diverse international character and prides itself on providing creative problem solving and strategic advice to clients.

The firm has been broadly recognised in publications and by various international institutions – including Chambers Asia, Chambers Global, the Legal 500, the International Financial Law Review, Asia Legal Business, Asialaw Profiles and China Law Profiles – as one of the best law firms in Taiwan. Tsar & Tsai is a full-service law firm and has decades of experience handling matters relating to foreign investment, general corporate, M&A, intellectual property, antitrust law, merger control filing, employment, criminal defence and dispute resolution.

International experience

Tsar & Tsai maintains close working relationships with leading law firms in most key jurisdictions around the world. It is also a member of Lex Mundi – the world’s leading association of independent law firms, with 160 members globally. Clients are assured that they are in good hands whenever cross-border legal services are required.

Specialty areas

Based in Taiwan for more than 50 years, Tsar & Tsai is a commanding presence in the Taiwanese patent litigation scene; it is a top choice for complex and high-stake disputes. With a bursting bench of dedicated IP professionals, it cuts no corners to secure the best results for clients. Although best known for its contentious work, it also boasts a large cadre of technically proficient engineers and is a smart option for those seeking to both procure new rights and enforce existing rights. Managing partner Jennifer Lin has more than three decades’ experience under her belt; she has amassed broad knowledge of IP, antitrust and corporate law, which she leverages to great effect around the negotiating table and in the courtroom. Joyce Ho and Jeanne Wang steer the IP group with confidence and poise. Both counsels are touchstone lawyers for key players in the high-tech world and assist in a diverse range of endeavours. Ms Lin, Ms Ho and Ms Wang are thought leaders who are regularly called on to represent government agencies.

Notable cases

Notable recent cases handled by the firm includes Pfizer’s Viagra patent suit; successfully defending NexPlanar against Rohm and Haas’s patent suits relating to chemical mechanical polishing pads; successfully defending Chang-Chun Petrochemical against Nippon Synthetic Chemical Industry’s patent suit relating to chemical powders for packaging material; successfully defending Giga Solar Materials against Heraeus Precious Metals North America Conshohocken’s patent suit relating to front side silver conductive paste for solar cell electrode; and successfully defending Trendscend against a patent suit relating to USB.

Competitive edge

Tsar & Tsai’s IP practice has been broadly recognised by organisations as one of the best in Taiwan. With decades of experience handling matters relating to patents, trademarks, copyright, unfair competition and trade secrets on behalf of foreign and local clients, the comprehensive scope of the firm’s IP practice includes litigation of infringement claims, administrative prosecution relating to trademark and patent applications and anti-counterfeiting actions. In the firm’s patent group, most patent attorneys and engineers have more than 10 years’ experience, and many patent attorneys and engineers possess both legal and technical backgrounds.

Contact details

Tsar & Tsai Law Firm
11F 100 Songren Road
Xinyi District
Taipei 11073
Taiwan

Professional contacts

Other offices

  • Hsinchu

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