Partner-in-Charge Taipei

Taïpei + 886.2.7712.3204

Jason Chen's practice focuses on commercial disputes, arbitration, and intellectual property disputes. He served as a Taiwan District Court judge for almost 10 years adjudicating criminal and civil cases and was certified as the first professional intellectual property law judge by the Taiwan Judicial Yuan in 2002. Jason has led litigation teams and has handled prominent cases that include serving as lead counsel and securing a favorable judgment for a publicly listed petrochemical company in its defense of a patent infringement claim of US$100 million, which is the highest claim in Taiwan's history. He is Partner-in-Charge of the Taipei Office.

Jason also has represented: one of Taiwan's top financial companies in its hostile attempt to acquire and take over another Taiwanese securities company, as well as in disputes related to corporate governance liability; a leading global Taiwanese company in successfully implementing defense strategies against an unsolicited tender offer; and a client in a high-profile arbitral and litigation proceeding, in which he obtained a favorable judgment in a US$257 million shareholder agreement dispute case. Jason's practice covers a wide range of other areas, including public construction, competition law, debt collection, product liability, white collar crime, and insider trading.

Jason has served as the co-chairman on the Intellectual Property Protection and Licensing Committee of the American Chamber of Commerce in Taipei (AmCham) since October 2005 and as director of the IP Law Committee of the Taipei Bar Association since 2006.

He has been honored for many years as a leading lawyer by internationally recognized legal guides for his IP and commercial-related litigation experience.


  • International investment bank defends claims of breach of loan agreement in AsiaJones Day is advising an international investment bank and certain of its current and former employees in connection with a lawsuit brought by other syndicate members for alleged breach of a loan agreement.
  • Siliconware Precision defends against $1 billion unsolicited tender offer by Advanced Semiconductor EngineeringJones Day advised Siliconware Precision Industries Co., Ltd. (SPIL) in relation to an unsolicited tender offer by Advanced Semiconductor Engineering (ASE) for up to 25% of SPIL common shares and ADRs.
  • Tatung obtains favorable judgment in shareholder disputeJones Day represented Tatung Co. in arbitral and litigation proceedings and obtained a favorable judgment in the US$257 million shareholder agreement dispute.
  • China Petrochemical prevails in three leading patent infringement cases in TaiwanJones Day successfully represented China Petrochemical Development Corporation (CPDC), a leading publicly listed company in Taiwan, in its settlement with Celanese International Corporation (CIC) after five years of litigation related to three patent infringement lawsuits against CPDC.
  • Financial holding company attempts acquisition of Taiwanese security companyJones Day represented one of the top ten financial holding companies in Taiwan in connection with its attempt to acquire and take over another Taiwanese security company.
  • Autres publications

    May 2014


    Indirect Patent Infringement – the Litigation Risk which Taiwan Enterprises Shall Not Ignore

    June 2013


    The Strategies of Taiwan Trade Secrets Protection under New Trade Secrets Act

    January 2013


    An Analysis of Taiwanese Industrial Litigation Trend in 2012

    January 2010


    The Features of Taiwan Intellectual Property Court and the Countermeasures

    November 2010


    Acquiring Corporate Control by Using Preliminary Injunction

    November 2009


    Patent Misuse and the Resolutions on Patent Licensing

    March 2009


    Global Patent Portfolio and Strategy During Financial Crisis

    February 2009


    The New Adjudication System for the Intellectual Property Cases and Enterprise Operation

    September 2008


    Taiwanese Business Litigation Today: Global Business with Borderless Disputes

    October 2007


    Enterprises Merger and Acquisition and the Intellectual Property Transfer


    發明專利權侵害及民事救濟之比較研究 (碩士論文 1995)

    Studies on Invention Patent Infringement and Civil Remedies (Master Thesis 1995)


    • November 3, 2019
      台灣商業祕密訴訟的現況及面臨的挑戰 The situation of Taiwan trade secret dispute and the challenge
    • May 23, 2019
      Cross-border Litigation Panel Discussion, The Legal 500: Taiwan Dispute Resolution Forum 2019
    • May 6, 2018
      企業併購之糾紛及處理 The Resolution of Disputes in Enterprises Merger and Acquisition
    • July 6, 2017
      企業併購之糾紛及處理 The Resolution of Disputes in Enterprises Merger and Acquisition

    December 2016


    A Must Learn Lesson for Enterprises Merger and Acquisition-The Dispute and Resolution in Enterprises Merger and Acquisition

    June 2016


    Intellectual Property Law Practice

    June 2016


    The Strategy and Litigation Management of Corporate Control Contest

    November 2015


    Intellectual Property and Trade Secrets

    August 2015


    The Case Studies of Important Civil and Criminal Liabilities for Board of Directors and Supervisors

    November 2014


    The Protection Duty of Trade Secrets for Board of Directors and Supervisors

    August 2013


    Creating Enterprise Value with Technology Innovation

    November 2011


    Aspects of International Patent Litigation Roles and Functions of the Expert Witness in Taiwan Patent Infringement Litigation

    September 2011


    Roles and Functions of the Expert Witness in Taiwan Patent Infringement Litigation

    October 2008


    Campus Internet Using and Copyright Protection