Professional Practice

William’s practice covers all areas of intellectual property litigation. He appears in the High Court in infringement and passing-off actions and in contempt proceedings for breach of injunctions and Island Records orders, including on appeal, and before the Trade Marks Registry in opposition, invalidation and revocation proceedings. He has also appeared on appeal from the Registrar of Trade Marks and before the Copyright Tribunal.

William has been ranked for Intellectual Property as a Leading Junior by The Legal 500 Asia Pacific (2022 to 2026) and as Up and Coming by Chambers and Partners Greater China Region (2026).

William accepts appointment as arbitrator. He has sat as presiding arbitrator in an HKIAC-administered IP dispute concerning online gaming licences, and has acted as counsel in other HKIAC-administered arbitrations.

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Selected Cases

Trade Marks and Passing Off

Infringement, Passing Off and Enforcement of Orders

  • Chrome Hearts LLC & Anor v Global Ventures Group Ltd & Ors [2026] HKCFI 2374: trade mark and copyright infringement and passing off; summary judgment; personal liability of a sole director and shareholder (with Philips Wong)
  • Wong To Yick Wood Lock Ointment Ltd v Sun Ascent Development Ltd & Anor [2026] HKCFI 2741 (appeal pending): committal for alleged breach of disclosure orders in a consent judgment; [2024] HKCFI 2706: application to set aside leave to bring committal proceedings for material non-disclosure (led by John Yan SC)
  • Cartier International AG & Ors v Dynasty Jewelry (Hong Kong) Ltd [2025] HKCA 818; [2023] HKCA 1002; [2021] HKCFI 1005: breach of Island Records orders (with Philips Wong)
  • Wong To Yick Wood Lock Ointment Ltd v Yue Hwa Cosmetic Ltd & Anor [2024] HKCFI 1868: committal of a company and its director for breach of delivery-up and disclosure orders in a trade mark infringement and passing-off action
  • Wong To Yick Wood Lock Ointment Ltd v Imperial Charity Hall Medicines Ltd & Anor [2024] HKCFI 1867: committal for breach of Island Records orders; [2021] HKCFI 1252: trade mark infringement and passing off; summary judgment; liability of a sole director as joint tortfeasor.

Registry Proceedings and Appeals

  • Monster Energy Company v 洪嘉珮 [2020] HKCFI 561: appeal from the Registrar of Trade Marks
  • “Swiss Military” [2026] HKTMR 22
  • Harmont & Blaine S.p.A. (device mark) [2025] HKTMR 43
  • “B.Duck” [2025] HKTMR 10
  • “Off & Device” [2025] HKTMR 1
  • “grMail” [2024] HKTMR 52
  • “Atwo illuma” [2024] HKTMR 8
  • “CVA” [2023] HKTMR 65 and [2023] HKTMR 66
  • “Buffy” [2023] HKTMR 61
  • “VIVO” [2023] HKTMR 40
  • “a2 Store” [2023] HKTMR 29; “ATWO” [2023] HKTMR 30

Copyright

  • Hundred Art and Creative Ltd v Thai Relax Ltd & Anor [2026] HKCFI 5807: sentence for breach of a permanent injunction in a copyright action
  • Neway Music Ltd v Hong Kong Karaoke Licensing Alliance Ltd CT 2/2010, 23 December 2019: 37-day hearing before the Copyright Tribunal on the reasonableness of licence fees under a karaoke music video licensing scheme (led by Andrew Liao SC, with Norman Hui)

Patents

  • German Pool Group Co Ltd & Ors v Dyson Technology Ltd & Anor [2025] HKCFI 6475: specific discovery; availability of exemplary damages under a cross-undertaking and for groundless threats of patent infringement proceedings (led by Andrew Liao SC)
Education

2013  PCLL (Chinese University of Hong Kong)

2010  Bachelor of Laws and Bachelor of International Studies (University of Sydney)

2005  Saint Ignatius College, Riverview (Sydney)

Professional Appointments & Memberships

Part-time Lecturer (Non-Clinical), Department of Professional Legal Education, The University of Hong Kong (2020-present)

Committee Member, Committee of Intellectual Property of the Hong Kong Bar Association (2019-present)

Committee Member, Standing Committee of Continuing Education of the Hong Kong Bar Association (2022-present)