Partner-in-Charge Taipei

Taipei + 886.2.7712.3204

Jason Chen's practice focuses on commercial law, intellectual property, and arbitration. With almost a decade as serving as a Taipei District Court judge, he has significant experience in civil and criminal trials and enforcement. Notably, he was the first intellectual property professional judge certified by the Judicial Yuan. Since 2004, Jason has led Jones Day Taipei's litigation team, managing diverse commercial, intellectual property, and arbitration cases. Since January 1, 2017, he has served as the Partner-in-Charge of the Taipei Office.

Jason's notable cases include representing a prominent petrochemical company in Taiwan's highest-value patent infringement lawsuit (exceeding US$100 million), with a significant win. He also handled cases involving the highest-value trade secret litigation (more than US$50 million) and rare hostile takeover-related litigations for leading domestic financial holding and semiconductor companies. In addition, he successfully represented a listed domestic company in arbitration exceeding US$200 million, securing significant wins in the history of Taiwan arbitration. Jason adeptly handles fair trade law, enforcement, product liability, white collar crimes, insider trading, and various civil and criminal litigations.

Since October 2005, Jason has co-chaired AmCham Taiwan's Property Protection and Licensing Committee, actively contributing to their annual white papers and advising government departments on intellectual property and trade. Jason acts as a vital liaison between AmCham's member companies, the Taiwan Intellectual Property Office, the Ministry of Justice, and the Judicial Yuan.

Recognized by international legal media, Jason's in-depth understanding and extensive experience in commercial litigation and intellectual property have positioned him as a highly recommended professional in these fields. He is fluent in English, Mandarin, and Taiwanese Hokkien.


  • 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.
  • 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