Tai E International Patent & Law Office > Taipei, Taiwan > Firm Profile

Tai E International Patent & Law Office
9th Floor., No. 112
Sec. 2, Chang-An E. Rd.

Taiwan > Intellectual property

Tai E International Patent & Law Office caters to a broad spectrum of well-known international brands and manufacturers operating in Taiwan and Greater China. As well as handling an impressive body of IP prosecution work, the firm is regularly trusted to handle complex, cross-border IP litigation disputes including copyright and trademark infringement. The firm’s patent division is particularly active in the biotech, technology and automotive industries. An expert in IP law in the biotech and pharmaceutical fields, Fred C. T Yen is also noted for his extensive pro-bono work. Registered as a patent attorney in Taiwan and China, Jerry CY Lin handles complex IP litigation matters across a wide range of industries.

Practice head(s):

Fred C.T. Yen; Jerry C.Y. Lin

Other key lawyers:

Henry C.H. Guei

Key clients

Abercrombie & Fitch Europe SA

Audi AG

Bulgari S.p.A.

H. Lundbeck A/S


Karl Mayer Textilmaschinenfabrik GmbH

L’air Liquide, Societe Anonyme

Pour L’etude Et L’exploitation

Des Procedes Georges Claude

Mattel, Inc.

Omya International AG

Promerus, LLC

Ricola Group AG

Robert Bosch GmbH

Sierra Space Corporation

Skoda Auto A.S.

SuperGroup PLC

Syngenta Crop Protection AG

Syngenta Participations AG

Volkswagen AG

Work highlights

  • Represented Han Lin Publishing, Nan I Book Enterprise, and Bridge Cultural & Educational Enterprise in invalidating the patent of the plaintiff to avoid total damages amounting to USD $107,000.
  • Represented Tender Forever International Co. in a civil action against a trademark infringer who distributed counterfeit products and secured damages of USD $180,000.
  • Represented Wo Shou Electric Industrial Co. in a civil action against a utility model patent infringer who distributed infringing products and secured damages of USD $60,000.

Over the past 60-plus years, Tai E International Patent & Law Office has matured into a major international IP law firm in Taiwan. Today we provide the highest level of quality legal services to our valued clients, from every corner of the world. With their support and trust, Tai E takes great pride in being referred to as one of the pioneering IP law firms in Taiwan. We are encouraged by the success and recognition we have achieved so far, and our goal is to always increase our efforts in order to meet the strictest professional standards and our clients’ every request in the future.

Our legal and technical professionals: We employ more than 280 professionals, including attorneys at law, patent attorneys, trademark agents, technical specialists and legal consultants, in four offices across Taiwan. These professionals are experienced in providing customized solutions on a cost-effective basis. Many of them hold postgraduate degrees, including PhDs, in either legal or technical fields from top institutions in Taiwan or overseas. Their outstanding academic credentials are enhanced by active engagement in advanced professional activities, from writing IP textbooks and articles to lecturing IP courses held by the government and academic institutions.

Every professional of the firm is proficient in at least one foreign language, including English, German and Japanese; while some of them are multilingual. Tai E’s professionals are trained in various categories of law and specialize in a wide range of technical fields, including pharmacology, chemistry, biotechnology, immunology, computers and software, electronics, semiconductors, physics, mechanical engineering and industrial design. Depending on the nature of a case, our professionals collaborate with each other to ensure that the best result is achieved for each client.

Tai E also offers a wide range of consulting and educational programs to local enterprises and is frequently consulted by government agencies. A number of our professionals have been invited to participate in public hearings regarding amendments to IP laws or regulations, such as the Trademark Act, the Patent Act and the Examination Guidelines. In addition, Tai E has played an active role in a number of professional organizations and has provided pro bono legal service at the Taiwan Intellectual Property Office.

Simple philosophies, solid commitments: We vow to provide services that exceed our clients’ expectations, catering to all requests.

Our reasonable fees guarantee the value of our services, and we ensure the best staff with the right expertise will be appointed to the task.

We believe that a stable operation benefits our clients and that this can be achieved only by recognizing the outstanding performances of all our team members. Everybody at Tai E is encouraged to take part in advanced education and create a comfortable working environment. These simple philosophies encourage our staff to progress in their careers at Tai E and to provide an unequalled excellence of service to each and every client.

The firm has faced many challenges during the past decades, yet one thing has remained the same: our persistent pursuit of professionalism, excellence and faithful service to our clients. These are values that we have cherished since the first day of the firm. We are determined to continue to preserve and uphold these values in the future.

Patents/Trademarks/Copyright FRED C. T. YENipdept@taie.com.tw
Patents/Trademarks/Copyright JERRY C. Y. LINipdept@taie.com.tw
Corporate/Commercial Law DEWEY W. C. JEANGipdept@taie.com.tw
Corporate/Commercial Law YUNI Y. R. JIANGipdept@taie.com.tw
IBA (International Bar Association)
Intellectual Property Owners Association (IPO)
International Federation of Industrial Property Attorneys (FICPI)
AIPPI (The International Association for the Protection of Intellectual Property)
AmCham - American Chamber of Commerce in Armenia
American Intellectual Property Law Association (AIPLA)
The Association of European Trademark Owners (MARQUES)
Taiwan Patent Attorneys Association (TWPAA)
LES (Licensing Executives Society)
INTA - International Trademark Association
Asian Patent Attorneys Association (APAA)

l 簡介





l 專業領域分工:全面性維護客戶智慧財產權利



依專業科技領域分案:專利師/工程師依資訊通信(ICT)、物聯網(IoT) 、人工智慧(AI)、半導體、電機、電子、機械、化工、生化、藥學及物理分類承辦案件。













l 經營理念:提供超越客戶需求、最有價值的服務







Being one of the pioneering law firms in the field of intellectual property law in Taiwan with a strong focus on all aspects of international IP protection, Tai E is continually voted by overseas peers and clients as one of the best IP law firms in Taiwan, and we have earned our firm’s outstanding reputation as well as our clients’ trust by consistently ranking at the top in terms of issued patents and trademarks. Furthermore, as we currently cooperate with firms and represent clients from well over 100 countries, we  are intimately familiar with scenarios of the IP markets from global giants to individual inventors as well as particular changes of local IP practice and trends of current international IP harmonisation. Thanks to our clients’ trust and our abundant professional experience in different IP jurisdictions, the patent and trademark cases that we file in Taiwan and other countries on behalf of global applicants now reach thousands of cases every year.

To further strengthen and expand our international presence, we are active in numerous international networks and are members of many international associations which include:

  • IBA (International Bar Association)
  • Intellectual Property Owners Association (IPO)
  • International Federation of Industrial Property Attorneys (FICPI)
  • AIPPI (The International Association for the Protection of Intellectual Property)
  • AmCham – American Chamber of Commerce in Armenia
  • American Intellectual Property Law Association (AIPLA)
  • The Association of European Trademark Owners (MARQUES)
  • Taiwan Patent Attorneys Association (TWPAA)
  • LES (Licensing Executives Society)
  • INTA – International Trademark Association
  • Asian Patent Attorneys Association (APAA)

In addition to being awarded by the Legal 500, we are recognised in international 2021 rankings including:

  • Asia IP Patent Survey 2021: Ranked in Tier 1 for Patent Prosecution & Patent Contentious
  • Asia IP Trademark Survey 2021: Ranked in Tier 1 for Trademark Prosecution & Trademark Contentious
  • Asialaw Profiles 2021: Ranked in Highly Recommended for Intellectual Property
  • Asian Legal Business 2021: Ranked Tier 1 for Copyright/Trademark
  • Asian Legal Business 2021: Ranked Tier 1 for Patents
  • Chambers Asia-Pacific 2021: Ranked in Band 1 for Intellectual Property: Patent & Trade Mark Agent
  • IAM 1000 The World’s Leading Patent Practitioners 2021: Ranked Gold (Top Tier) for Firms: prosecution
  • IP Stars 2021: Ranked in Tier 1 for Patent Prosecution
  • IP Stars 2021: Ranked in Tier 1 for Trademark Prosecution
  • The legal 500 Asia Pacific-2021: Ranked in Tier 1 for Intellectual property: prosecution

These awards reflect our firm’s international orientation and long-standing commitment to all aspects of IP protection, and Tai E is constantly striving to further refine the services we provide for our international clients.

TESTIMONIAL: Throughout our cooperation, we were deeply impressed by your professionalism and efficiency. We experienced smooth communication and excellent cooperation with each member of your staff. We look forward to continuing our long-term cooperation with you in the future.

TESTIMONIAL: We are so grateful to work with Tai E. Your continued support and all of the help provided with our work are highly appreciated. We sincerely hope to further develop our cooperation in the years to come. Thank you for being such a great partner!

TESTIMONIAL: We are really glad to have been working with you for so many years, with the same level of efficiency as on the first day. Congratulations and we hope to keep working with you. Thank you for your great work!

TESTIMONIAL: The bi-weekly newsletter from your firm is very helpful and informative to understand IP issues in Taiwan and other countries.

TESTIMONIAL: Always does a good job and provides timely feedback.

TESTIMONIAL: A great firm and always responsive to clients’ inquiries.

Our client was sued for infringement of an invention patent owned by the plaintiff, and the plaintiff demanded our client to pay damages in the amount of NTD 20,000,000 (about USD 666,667). On behalf of the client, Tai E successfully persuaded the IP Court in the first and second instances that the patent in dispute shall be invalidated for lack of novelty, and the judgments were then rendered in favour of our client (the defendant) respectively on March 26, 2019 and May 21, 2020. The plaintiff then filed an appeal with the Taiwan Supreme Court, but the Court dismissed their appeal on May 12, 2022. This case has become irrevocable and binding.