Tsai Lee & Chen


11F No. 148 Songjiang Road
Taipei 104


Contact us

Key contacts:

Partner: Crystal J. Chen
Contact this Practitioner

Quick facts:

Number of lawyers: 10
Network memberships: ABA, AIPPI, AIPLA, INTA, APAA, TWPAA, IPO, FICPI, JIPA, ECTA, PTMG, MARQUES • Professional memberships: Taipei Bar Association, New York State Bar Association, All China Lawyers Association
Languages: Chinese, English, German, Korean and Japanese

Tsai, Lee & Chen started as an IP prosecution and litigation boutique. It is now a top-tier IP law firm based in Taipei, Taiwan, with more than 180 full-service IP professionals and lawyers to serve a wide variety of clientele either domestic or international in cutting-edge technologies and more. Recently it enlarges its practice scope to capital market, corporate management, and taxation.

The firm has a diverse professional background with a team of leading practitioners admitted to practice multi-jurisdictionally in Taiwan, China and the USA. They are particularly seasoned in cross-border legal dispute resolutions.

Tsai, Lee & Chen has been holding top leadership posts in several law societies both locally and abroad, including the Founding President and the incumbent Vice President of the Taiwan Patent Attorney Association as well as the Chair of Delegates for the Independent Members of the AIPPI.

  • Administrative and regulatory
  • Appellate
  • Capital markets
  • Civil litigation
  • Commercial and transactions
  • Competition/antitrust
  • Corporate governance
  • Criminal
  • Financial services regulatory: Contentious
  • Intellectual property
  • Patent contentious
  • Plaintiff/claimant
  • Privacy and data protection
  • Professional malpractice
  • Tax
  • Trade and customs
  • Trademark contentious

International Marketing Division
Crystal J. Chen

  • Won pharmaceutical-patent linkage suit (with mass media covered) to clear barriers for marketing of an affordable generic drug.
  • Successfully dismissed an infringement damage claim of USD 12,550,000 in defence for Taiwan’s largest swappable battery network.
  • Convinced the court to accept post-sale confusion theory first time ever against a counterfeit.

  • Accounting
  • Automotive
  • Banking
  • Consumer goods and services
  • Energy
  • Financial services
  • Food and beverage
  • Gaming
  • Industrials
  • Media
  • Pharma and life sciences
  • Tech and telecoms
  • Utilities
  • Semiconductor
  • Software and information appliances
  • Electric and Machinery

  • Taichung
  • Tainan