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This profile reflects asialaw research. The “(asialaw)” label indicates the source of this content.

Key contacts
Partner: Crystal J. Chen
Quick facts

Partners: 14
Other qualified practitioners: 80
Total number of lawyers: 12
Practitioners (worldwide): 81
Languages: Mandarin, English, Japanese
Network memberships: APAA, AIPLA, IPO, INTA, FICPI, AIPPI, JIPA, PTMG, Marques

Key practice areas
Intellectual property (asialaw)
Firm overview

Tsai, Lee & Chen Patent Attorneys & Attorneys at Law is a top-tier IP law firm based in Taipei, Taiwan, with more than 180 full-service IP professionals and lawyers.

Firms History
Founded in 1995, Tsai, Lee & Chen boomed with the advent of Taiwan’s high-tech industrialization. The firm has since developed a full-service IP law department that encompasses all areas of intellectual property in prosecution, portfolio management, litigation, licensing, etc., with constant trust among its reputable domestic and international clientele.

Industry Sector Strengths
The firm’s patent expertise is led by a significant number of patent attorneys licensed in both Taiwan and China. Their technical backgrounds encompass the fields of semiconductors, consumer electronics, thin film transistor liquid crystal display technology, mechanical and electrical engineering, optics, artificial intelligence, financial technology, computer hardware and software, telecommunications, biochemistry, pharmaceuticals, business methods and information technology.

Litigation and Dispute Resolution
The firm has a record of handling many landmark cases at Taiwan IP Court. The types of litigation and disputes range from trademark, patent, copyright, unfair competition to breach of contracts and cross-border disputes. The team is sophisticated in complex trademark enforcement issue, patent invalidation and infringement as well as non-infringement analysis and declaratory actions.

The firm is in association with a senior attorney sophisticated in maritime law. The joint practices expand the horizon of the legal expertise to resolve a variety of disputes relating to international trade, shipping and cargo charter flight. The firm also helps companies to establish their own IP management and to acquire ISO Certification for IP management.

Clients
Tsai, Lee & Chen is reputable for its representation for the globally renowned international and domestic clients in fashion industry, electronics, software and semiconductor industries, as well as companies in biotech starups, pharmaceuticals and medical devices areas.

The firm has developed an extensive global IP network in America, Europe and the U.K., Japan and Asia. The firm also accumulated valuable experience and networks in China in more than 20 years’ dedication.

Working Culture
The firm’s leading practitioners have diverse professional backgrounds. Some possess more than one practice admission before the IP Offices or courts in Taiwan, China and the USA. The firm values the contribution of each talent working as a team. It encourages members find themselves not only doing a job but growing together with the firm and becoming an advisory expert and advocate in the legal and IP profession.

In-house Innovation and Technology
The firm has an in-house IT team who designs and maintains its IT software and database. Tsai, Lee & Chen uses these house-tailored technologies in daily administration including invoicing, email communication and official formality compliance to enhance our working efficiency, reduce human errors and meet the client’s demand.

Practice areas & sector specialisations
  • Intellectual property
Sector expertise
  • Construction and materials
  • Consumer goods and services
  • Pharmaceutical and life sciences
  • Technology and telecommunications
Other offices
  • Taichung, 403405, Taiwan
    34F, No.218, Sec. 2, Taiwan Blvd
    Tel: +886-4-2322-5282
    Email: info@tsailee.com.tw
  • Tainan, 700007, Taiwan
    3F, No.66, Sec. 2, Minzu Rd.
    Tel: +886-6- 226 -5438
    Email: info@tsailee.com.tw
Address:
11th Floor No. 148 Songjiang Road Taipei,
104
Taiwan
Tel:+886 2 2564 2565 Email:Contact Us Web Address:https://tsailee.com.tw/
2025 Edition
Intellectual property (asialaw)
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Overview

Tsai Lee & Chen’s full-service IP law department handles IP prosecution, portfolio management, litigation and licensing matters. The team’s industry expertise lies within the semiconductors, consumer electronics, telecommunications, biochemistry and pharmaceuticals sectors. Partner Crystal J Chen is the manager of the international marketing division. Her practice covers foreign litigation and IP prosecution business development. The firm’s patent practice is led by Augustus CP Chin and Candy KY Chen. Chen is a patent attorney and is noted for her patent and design work in manufacturing and mechanical engineering. 

Linked Reviews
Intellectual property (asialaw)

Work highlights 

Represented Gentle Monster from Korea in successfully defending an opposition by the energy drink producer Monster Energy. 

Represented Inergy in successfully securing a damages award for Force MOS’s unfair competition activity by asserting expired foreign patents. 

Key clients 

Delta Electronics, KKBOX, Mercedes-Benz Group 

Deal Highlights
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