David Reive

David Reive

Miller Thomson LLP

Recognized since 2008

Toronto, Ontario

Practice Areas

Intellectual Property Law

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David Reive is a partner and a national leader in intellectual property at Miller Thomson. David primarily practises intellectual property litigation. He represents clients in all types of IP cases and has litigated patent cases involving diverse technology such as oil field equipment, medical devices, software, and pharmaceutical products. He has experience with trademark cases involving food products, footwear, apparel, and benefits programs.

David’s expertise and advocacy skills have been widely recognized. David is listed in Best Lawyers of Canada for both Biotechnology Law (since 2008) and Intellectual Property Law (since 2015). He is listed in the Canadian Legal Lexpert Directory as “repeatedly recommended” for intellectual property. David has been listed in Intellectual Property Magazine’s IAM Patent 1000—The World’s Leading Patent Practitioners since 2012, in which he has been described as:

  • “consistently giv[ing] highly effective courtroom performance”

  • “combative and well informed”

  • a “tenacious pharmaceutical litigator” and “the preferred counsel of several multinational generics.”

David regularly acts for pharmaceutical companies in proceedings under the Patented Medicines (Notice of Compliance) Regulations as well as in patent infringement and invalidity actions.

In addition to extensive experience as counsel in patent litigation, David has experience as an expert witness on Canadian patent law in a multijurisdictional arbitration proceeding.

As an active member of the IP legal community, David is a regular presenter and contributor to intellectual property conferences and seminars. David has spoken extensively on many issues related to patent litigation and pharmaceutical patents.


  • Scotia Plaza
    40 King Street West, Suite 5800
    Toronto, ON M5H 3S1

Bar Admissions

  • Ontario, 1992
  • Ontario, 1992

Recognized in The Best Lawyers in Canada 2023 for work in:

  • Intellectual Property Law

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