Phoebe S. Sun

Senior Counselor

Phoebe started work in the patent profession in 1991, joined Lee and Li in 1996, and is now the head of Chemical Group of Patent Department. Phoebe specializes in chemistry, semiconductor and pharmaceuticals, and mainly handles patent prosecution in Taiwan and China. Phoebe is also well experienced in patent searches, rendering opinions on validity, infringement and freedom to operate, handling invalidation/cancellation cases, and supporting patent infringement and administrative appeal and suit proceedings. Phoebe was in charge of a milestone case regarding patent term extension in Taiwan for a US pharma company, handled many patent infringement litigation cases for domestic and foreign clients in Taiwan and China, and attended interviews and court hearings in China for invalidation and infringement cases. In one of the infringement cases, around USD100 million damages was awarded for a US chemical company.

    Educational Background

    Taipei Medical University (mini EMBA in Smart Healthcare, 2018)
    New Jersey Institute of Technology (M.S. in Environmental Science, 1994)
    Chung-Yuan University (B.S. in Chemistry)


    Patent prosecution and administrative remedies,Patent infringement analysis/litigation,Patent invalidation,Patent search (novelty/invalidity/FTO)


    Member of International Association for the Protection of Intellectual Property (AIPPI) (2016~)
    National Institute of Environmental Analysis, Environmental Protection Administration (1994-1995)
    Tsar and Tsai Law Firm (1991-1992)

    Contact Information

    Taipei Office
    Telephone:+886-2-2763-8000 Ext.2647