Ottawa, Montreal

English, French

Dennis Leung

Of Counsel

Dennis is fluently bilingual and is a leading expert in Intellectual Property, with 17+ years drafting and prosecuting patents for high-tech and mechanical products on the national and international levels, including in-house role with a pre-eminent multinational wireless telecommunications company and national boutique IP firms. His experience also includes IP counsel to successful technological start-ups and industry leaders with cutting edge technologies, integrating broad knowledge of patent issues into business strategy for sustained, long-term, and targeted business and product development.

He has a solid academic foundation and professional electronic engineering experience, with intuitive ability to leverage technological knowledge to articulate issues for lay audience and provide incisive advice and innovative solutions to decision-makers while striking balance between respecting legal hurdles and moving business opportunities forward.

Expertise & Career Highlights:

  • Intellectual Property (IP) Drafting, Prosecution & Litigation – Appeared as counsel in the Supreme Court of Canada, represented national and international clients before the Federal Court of Appeal, Federal Court of Canada, Ontario Court; drafted and prosecuted original Canadian, U.S., EP and PCT International patent and Canadian design applications.
  • In-House Counsel, Patent Licensing, Business Strategy & Development – Met with reverse engineering customers to support patent licensing initiatives, including reviewing, negotiating, and managing corporate agreements, non-disclosure agreements and indemnity issues; collaborated closely with executives, internal and external counsel, business unit leaders and partners world-wide on patent licensing and litigation issues; provided risk assessment and general advice integral to overall business strategy and international patent licensing and litigation programs.
  • Educator & Recognized Leading Expert in Patents and Patent Claim Construction – Several years’ experience as university law school sessional lecturer and chief instructor for Intellectual Property Institute of Canada (IPIC), co-authored leading text on Patent Claim Interpretation, developed and presented numerous lectures and webinars for engineers and patent professionals.



  • LL.B. (with Distinction), University of Western Ontario
  • P.Eng. (Ontario)
  • M.Sc. (Eng.), Electrical Engineering, Queen’s University
  • B.Sc. (Eng.), (Hons), Electrical Engineering, Queen’s University


  • Telecommunication
  • Optical Communications
  • Semiconductors
  • Electronics
  • Networking
  • Wireless technologies;
  • Software
  • Antenna Systems
  • Positioning Systems
  • Telephonic Devices
  • Medical Devices
  • e-commerce

Practice Area

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Randall is a partner of the firm and has been certified as a specialist in all areas of Canadian IP Law.
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