Firm Profile > Tsar & Tsai Law Firm > Taipei, Taiwan

Tsar & Tsai Law Firm
11F, No. 100, Songren Rd, XinyiDist.
Taipei City 11073

Capital markets Tier 1

Acting both for domestic and international clients, Tsar & Tsai Law Firm advises on a range of transactional matters as well as the regulation of securities firms. Key contacts include Jackie Lin, who advises local and offshore securities issuers and investment bankers on securities regulations, and Janice Lin, who represents Taiwan-listed companies with foreign securities offerings. Also recommended are Randy Tsai, public offering specialist Yvonne Liu and Lynn Lin.

Other key lawyers:

Key clients

Goldman Sachs (Asia) L.L.C.

Morgan Stanley & Co. International plc.

Credit Suisse Securities (USA) L.L.C

China International Capital Corporation Limited

Corporate and M&A Tier 1

Tsar & Tsai Law Firm provides a full slate of M&A services, including incorporations, joint ventures, reorganizations, dissolutions, M&A, syndication loan documentation, post closing restructurings, and tax planning. Jackie Lin recently led a $525m deal that saw Kongsberg Gruppen complete its acquisition of the Rolls-Royce Commercial Marine. Other names to note are James ChengJanice Lin, who is particularly experienced acting for international clients, and Lynn Lin, who has a good deal of experience in the technology and manufacturing sectors.


Jackie Lin is exceptional and has a wealth of knowledge

Excellent service

‘Build strong relationships with clients’

Key clients



Ennoconn International Investment Co., Ltd.

E Ink Holdings Inc.



Microlife Corporation

Carl Zeiss Co., Ltd Taiwan

Dispute resolution Tier 1

The disputes team at Tsar & Tsai Law Firm includes a number of former judges and public prosecutors, and has expertise in representing clients in hearings before government agencies and the Taiwan Administrative Court. The team has recently been active in white-collar criminal defence, civil litigation defence, administrative litigation and matters related to infrastructure projects. Key figures include Jennifer Lin, who is experienced in corporate- and IP-related litigation, veteran trial lawyer Edgar Chen, former judge and public prosecutor Josh Fan, and Vincent Lin, who specialises in commercial litigation.


Jennifer Lin is a sharp thinker and a superior attorney’

Key clients

An E-Commerce giant based in China


Ex-President of MFHC

Former President of SinoPac

OHL (Taiwan) Ltd.

The chief executive officer of the Taiwan subsidiary of a multinational health care and cosmetic company.

Intellectual property Tier 1

Tsar & Tsai Law Firm  has a full-service IP practice covering litigation, licensing and prosecution. The team handles matters relating to trade marks, copyrights, patents and trade secrets, and represents both domestic and multinational clients to take anti-counterfeiting measures, prosecute infringement claims, and defend against infringement allegations. The team includes Jennifer Lin, who has negotiated IP issues for the Board of Foreign Trade with the US government; Vincent Lin, who works on patent rights abuse and patent infringement; Joyce Ho, who focuses on IP rights protection and patent infringement in hi-tech industries; and experienced litigator and licence negotiator Jeanne Wang.

Key clients

Transcend Information

Chang Chun Petrochemical

Micron Technology Taiwan

Labour and employment Tier 1

Tsar & Tsai Law Firm's full-service employment team focuses on disputes relating to severance pay, pensions arrangements and welfare funds, workers’ compensation and employee benefits, occupational hazards, and labour insurance. The team also assists employers with negotiating and drafting employee contracts and company regulations. The team includes Edgar Chen, who has previous experience as a labour court judge in the Taipei District Court; disputes specialist Jennifer Lin; and Janice Lin and Jackie Lin, both of whom practice across the firm's corporate and commercial practices.

Key clients

Cadence Design Systems Inc. & Cadence Design System (Taiwan) B.V. Taiwan Branch


Fiskars Group

Cathay United Bank

Tax Tier 1

Tsar & Tsai Law Firm focuses on tax matters related to business transactions and is particularly active for international corporates operating in Taiwan. The team handles tax audits, tax planning, and tax disputes at court and before government agencies. Wellington Liu, who is licensed as both an attorney and a CPA, has extensive expertise in M&A and has appeared in administrative proceedings before the National Tax Administration. Another name to note is Richard Chuang, who is experienced in tax planning and accounting.

Other key lawyers:

Key clients

Alta Advisers

Panasonic Liquid Crystal Display Co., Ltd.

Europcar International

Siemens Gamesa Renewable Energy, S.A.

Burberry (Taiwan) Co., Ltd.

TMT Tier 1

Tsar & Tsai Law Firm's TMT group has considerable experience in structuring deals and advising on matters related to telecoms and IT such as cable laws, satellite laws and direct broadcasting, cell phone and IT services, and licensing. The team also has an expanding focus on the e-commerce sector. Yvonne Liu has been advising Alipay, Alibaba and Taobao on data protection and payment services regulation.

Other key lawyers:

Key clients


Alibaba and Taobao

Antitrust and competition Tier 2

Tsar & Tsai Law Firm has a broad service offering, assisting clients on merger filing and leniency claims, providing antitrust compliance training and representing clients before the Taiwan Supreme Administrative Court. The team is experienced in representing companies in administrative and government initiated litigation, particularly in matters involving antitrust law and intellectual property law. The practice is headed by Jennifer Lin and Matt Liu, who has experience as a former officer of the Taiwan Fair Trade Commission and advised clients across a wide range of industries. Senior associate Yichu Chen is also noted.

Practice head(s):


‘Strong and extremely well-respected’

Matt Liu leaves no stone unturned’

Key clients

Linde AG


LG Electronics and Lufthansa Technik

Applied Materials

Insurance Tier 2

Tsar & Tsai Law Firm's insurance practice advises domestic and international insurance and reinsurance companies on insurance mechanisms to cover transactional risks in M&A deal closing, and also represents clients in insurance-related disputes. Key lawyers include James Cheng, who is experienced in regulatory compliance matters and claim disputes, and Randy Tsai, who is advising the American Chamber of Commerce in Taipei's Insurance Committee.

Other key lawyers:

Key clients

Catlin Re Switzerland


Allen & Overy LLP Singapore

Cathay Century Insurance

Projects and energy Tier 2

Tsar & Tsai Law Firm focuses on lender-side project finance mandates, and has recently handled matters including the acquisition of a cable television network and a television- and broadband-systems operator. The practice is experienced with power financing, particularly offshore wind, having advised the financing parties of both the Formosa 1 and WPD offshore wind farms. Janice Lin, who leads project financing matters, is the name to note.

Other key lawyers:

Key clients

Crédit Agricole Corporate & Investment Bank, Cathay United Bank Co., Ltd., BNP Paribas, and EKF Denmark’s Export Credit Agency, and other banks

Deutsche Bank

Citi Bank

Hong Leong Hotel Development Ltd.

International Lease Finance Corporation, Barclays Bank PLC and Bank of Scotland PLC

Real estate and construction Tier 2

Tsar & Tsai Law Firm has experience in real estate development, property investment and sales transactions, and hotel and resort franchising and management. The names to note are Lillian Chu, who has experience in hotel building and infrastructure projects and in investment planning, and Wellington Liu, who focuses on real estate investment and corporate law.

Other key lawyers:

Key clients

True Blue Development Limited

Taiwan Life Insurance

Fortune Fountain International Investment

Starwood Hotels and Resorts Worldwide

Marriot International


Artyzen CitizenM Asia

Banking and finance Tier 3

Tsar & Tsai Law Firm's banking and finance team acts for banks and other financial institutions, both international and domestic. In the contentious space, the team advises on enforcement proceedings, including work-out arrangements and re-financing, debt collection and bankruptcy matters. Also of note, the team is increasingly expanding into the project financing space. Key contacts include Jackie Lin, who advises financial holding companies and banking institutions on a wide range of compliance issues, and Janice Lin, who represented the financing parties in the Formosa 1 offshore wind project. Lynn Lin is also noted.

Key clients

Crédit Agricole Corporate & Investment Bank

Cathay United Bank

BNP Paribas

Fubon Bank

ANZ Bank

Société Générale


The firm

Tsar & Tsai Law Firm is a leading Taiwan-based law firm that provides services to local and foreign clients on all aspects of commercial transactions, and on domestic and international dispute resolution and litigation. The firm was founded in 1965 by Ruchin Tsar ( -1993) and Paul C. Tsai( -2013), and has since grown to its present size of over 80 professionals, including lawyers, trademark agents, and patent attorneys and engineers. Tsar & Tsai has long been known as one of the most prestigious law firms in Taiwan. The firm celebrated its 50-year anniversary a few years ago and continues to make efforts to provide practical and good quality of legal service to its clients.

Tsar & Tsai has always maintained a diverse, international character. The majority of attorneys received legal education and training both domestically and overseas in the United States, UK, Japan and other major countries. The firm’s clientele includes many multinational enterprises and local listed companies. A distinct capability of the firm is that it can deliver direct services in fluent English and Japanese.

Lawyers of Tsar & Tsai actively participate in local legal education, taking important roles in local bar associations, teaching at law schools and frequently contributing to professional and academic publications. The firm established the Tsar & Tsai Foundation in 2018, through which the firm keeps its active engagement in growing extent of legal educational activities such as sponsoring talented law school students, hosting legal forums and symposiums, supporting youth programs and other civil/legal education activities, etc.  The firm is very conscientious of its social responsibilities and regularly performs works on pro bono basis.

Areas of practice

Tsar & Tsai is a full service firm. Other than handling commercial transactions for its clients, Tsar & Tsai has been famous of handling complex dispute cases and IP infringement cases. Its litigation team are highly prised for taking some of the most high profile commercial dispute and criminal defence cases and spent efforts to secure the clients’ rights. In addition, Tsar & Tsai has been famous for its M&A practice, with focus on high technology sector and financial service industry. Due to its past history, Tsar & Tsai has many experiences in assisting its multinational and PE fund clients to structure, negotiate and consummate cross border transactions.


Department Name Email Telephone
IP litigation Jennifer Lin
Fair trade law and anti-trust case Jennifer Lin
Arbitration Lillian Chu
Civil and administrative litigation Lillian Chu
Franchise deals Wellington Liu
Tax case and litigation Wellington Liu
Civil and administrative litigation Edgar Chen
White collar crime case Edgar Chen
Merger & Acquisition Jackie Lin
Capital market Jackie Lin
Cross border transaction Jackie Lin
Intellectual property Joyce Ho
High technology licensing Joyce Ho
Merger & Acquisition Janice Lin
Anti-bribery and money laundry case Janice Lin
Financing deals Janice Lin
Criminal defence and litigation Josh Fan
Financing deals James Cheng
Merger & Acquisition Janice Lin
Criminal defence and litigation Judie Sun
Intellectual property Jeanne Wang
IP litigation Jeanne Wang
Fair trade law and anti-trust case Matt Liu
Anti-bribery and money laundry case Matt Liu
Insurance Randy Tsai
Labor and employment Randy Tsai
Capital market Yvonne Liu
General Corporate Yvonne Liu
White collar crime case Vincent Lin
Arbitration Vincent Wang
General Corporate Lynn Lin
Cross border transaction Lynn Lin
High technology licensing Ray Hsu
Photo Name Position Profile
Ms Maggie Lee  photo Ms Maggie Lee Integrated Partner
Mr Max Lee  photo Mr Max Lee Senior Associate
Ms Jenny Sheu  photo Ms Jenny Sheu Advisor
Ms Marilyn Wu  photo Ms Marilyn Wu Integrated Partner
Mr Alex Yin  photo Mr Alex Yin Integrated Partner
Number of lawyers : 53
at this office : 52
Mandarin Chinese
Taiwan member firm of Lex Mundi
Its lawyers are members of various international organizations such as IBA and IPBA
Other offices : Hsinchu

  1. Mandarin


「常在」 之中文所名,為本所英文名 “TSAR & TSAI” 譯音,亦表示本所隨時可靠之服務,並含「主恩常在」之祝福!




  1. Japanese