Christopher A. Guerreiro

Of Counsel
Norton Rose Fulbright Canada LLP

Christopher A. Guerreiro

Christopher A. Guerreiro

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Christopher A. Guerreiro practises intellectual property dispute resolution and litigation, with an emphasis on patents and issues affecting the life sciences, healthcare, and other high-technology industries.

Mr. Guerreiro has spent much of his career working with life sciences innovators. As a litigator and advisor, he focusses on developing dispute-resolution strategies that align with the unique interests and business objectives of clients in this space—whether through litigation or a negotiated outcome.

Mr. Guerreiro has particular experience acting in complex patent infringement, impeachment, and damages disputes before Canada's federal courts. Among them, he was counsel on the first series of patent infringement actions brought under section 6 of the new Patented Medicines (Notice of Compliance) Regulations. In addition to small-molecule and biologic drug cases, his patent litigation and related work has also involved a range of other technologies such as medical devices, vaccines, gene therapy, energy, consumer technology, and software.

Mr. Guerreiro is regularly consulted on issues relating to the Patented Medicine Prices Review Board (PMPRB), and has acted as counsel in industry-wide administrative law challenges to regulations and guidelines governing the PMPRB. More broadly, he also advises on other matters that are susceptible to litigation under the Patent Act and related legislation.

Mr. Guerreiro has been a member of the firm since joining as a summer student in 2011. He is an editor of our Pharma in Brief bulletin and leads a number of programmes related to associate development, substantive legal knowledge, and team-building within the firm. He is also an active contributor to process development and project management initiatives that drive efficiency in the delivery of legal services on complex mandates.

Professional experience

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J.D., Osgoode Hall Law School, 2012 (Silver Medallist)
B.Sc. (Hons.), University of Toronto, 2009
  • Ontario 2013
  • Best Lawyers in Canada: Intellectual Property Law, 2024
  • Managing IP, IP Stars, 2020–2023: "Rising Star"
  • Osgoode Hall Law School Silver Medallist
  • McCarthy Tétrault LLP Prize for the student standing second in first year
  • Christopher Robinson Prize for the student who takes second place in the examinations of the final year
  • Blake, Cassels & Graydon Prize in Business Associations
  • Gurston Allen Prize in Conflict of Laws
  • Aird & Berlis Prize in Contracts
  • McMillan LLP Prize in Contracts
  • Harry R. Rose Criminal Law Prize
  • Kenneth Gibson Morden Memorial Prize in Evidence
  • Cassels Brock & Blackwell Prize in Legal Process
  • "US and Canada – A Look at Pharma Patent Litigation In Two Countries," American Intellectual Property Law Association (AIPLA), December 1, 2022.
  • Canadian Bar Association
  • Law Society of Ontario
  • Ontario Bar Association
  • The Advocates' Society
  • Intellectual Property Institute of Canada
  • Toronto Intellectual Property Group
  • English