Jeffrey McLean > Deacons > Hong Kong, Hong Kong > Lawyer Profile

Hong Kong

Work Department

Intellectual Property practice group




Jeff is a Partner in the Patent and Designs Practice.

Jeff has a unique background as he is a Hong Kong qualified lawyer as well as a Registered Australian/New Zealand Patent Attorney and Registered Australian Trade Mark Attorney.  He holds a BSc and a LLB (Hons) from the University of Queensland in addition to a Master of Information Technology from Queensland University of Technology and a Master of IP Law from University of Technology Sydney.  Jeff is also admitted as a solicitor in Queensland and NSW and practised with a leading national firm prior to joining Deacons.

Jeff has also worked as a Patent Examiner with the Australian Patent Office (IP Australia), examining and conducting searches on patent applications as an examiner in the electronics and computing section, which gives him insights into the patent examination process.

His dual technical tertiary qualifications uniquely equip him in the provision of strategic commercial advice in diverse technical areas, including recently advising on the following:

  • Biochemistry: stem cells, cancer immunotherapy / CAR-T cells, gene therapy, monoclonal antibodies genetic diagnosis, biomarkers and synthetic biology, bioinformatics; consumer products and diagnostic devices.
  • Computer-related: computer data structures, fintech applications, gaming machine technology, distributed ledger software (blockchain), applied big data analytics, artificial intelligence including machine learning protocols and applications, medical imaging devices and imaging algorithms.
  • Mechanical: general electro mechanical inventions, including medical devices, metrology probes, microfluidics, consumer goods, construction products, protective equipment, photonics and small household appliances.

Jeff’s broad practice includes patent drafting and strategic advice on filing and prosecution strategies in China, Europe, United States, Hong Kong, Australia and other substantive jurisdictions, and general patent portfolio and renewals management.  He has also worked with our contentious team in providing litigation support and strategic advice for numerous patent and design infringement cases.  He routinely provides freedom-to-operate advice, including for listing purposes.


Strategic Patent Projects and Drafting

  • Analysis (landscaping and freedom-to-operate), drafting, prosecution and filing strategy for cardiovascular medical and surgical products.
  • Portfolio management and prosecution of entire Chinese Patent Portfolio of FTSE listed precision electronics company.
  • Advising a well-known transportation services operator on patent and design protection strategies relating to various innovations including drafting, prosecution and landscape analysis for various inventions including escalator monitoring systems, train control systems and the use of Internet of Things and AI technology in train line operations.
  • Advising a well-known transportation services provider in protecting aspects of automated imaging devices for maintenance operations, immigration and infrastructure monitoring including drafting, prosecution and landscape advice.
  • Drafting and prosecution of patent applications for SME’s, universities and various multinational corporations in China, Europe and United States including for major HK universities, consumer appliance and household item manufacturers.
  • Drafting and prosecution of patent applications for the Hong Kong branch of multinational corporations in China, Europe and United States in multiple technical areas outlined above.
  • Providing freedom-to-operate opinions and protection advice for major health services operator, including in respect of procurement policies and emergency access to medicines.

Patent Enforcement and Litigation

  • Providing litigation support, infringement and validity analysis in relation to DNA sequencing technology in HK Court Proceedings.
  • Providing litigation support, infringement and validity analysis in relation to network infrastructure technology in HK Court Proceedings.
  • Providing litigation support, infringement and validity analysis in relation to patent infringement action on behalf of an international supplier of household appliances.
  • Strategic infringement and enforcement advice in relation to multi-jurisdictional electronic devices.
  • Freedom-to-operate opinions in mechanical devices, network hardware, medical devices, consumer products and mechanical inventions.




Council Member and Chair Patents Sub-Committee, The Hong Kong Institute of Trade Mark Practitioners (HKITMP)

Committee Member, The Asian Patent Attorneys Association (APAA) Hong Kong

Council Member, Patents Committee, The Asian Patent Attorneys Association (APAA) Hong Kong (2018 – 2020)

Member, Féderation Internationale des Conseils en Propriété Intellectuelle (FICPI)

Member, The Law Society of Hong Kong


BSc (Biochemistry), University of Queensland

Master of Information Technology, Queensland University of Technology

Master of Intellectual Property Law, University of Technology Sydney

LLB (Hons), University of Queensland

Lawyer Rankings

Hong Kong > Intellectual property

(Next Generation Partners)

Jeffrey McLeanDeacons

Long-established Hong Kong law firm Deacons works for several of the world’s best-known brands on both their trade mark portfolios and complex prosecutions. It also houses a dedicated patent team, comprising patent attorneys who are qualified in Australia, China, Europe and UK. Another strength is IP litigation, while sector strengths for the group include consumer goods, financial services, TMT, life sciences, luxury goods, hospitality, entertainment, and electrical, electronic and mechanical manufacturing. The IP department is co-led by court litigation specialist Charmaine Koo, and Annie Tsoi, who also heads the China IP practice group. Also integral to the team are trade mark portfolio protection expert Patsy Lau; Jeffrey McLean, who is experienced in the technical and patent aspects of contentious matters; and Hong Kong and New Zealand-qualified Kelley Loo. Emmy Chow is a partner as of January 2022, while Theresa Luk and Eliza Siew are the senior associates to note.