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Christopher Guerreiro

Dedicated ip attorney.

Practices in

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Christopher Guerreiro is an attorney based in Toronto, ONTARIO. The practice focuses on IP and Real Estate.

Based in
Toronto, ONTARIO
Experience
attorney
Known for
IP · Real Estate
  • Handles IP and Real Estate matters from Toronto, ONTARIO.
  • Recognized with Best Lawyers in America — Intellectual Property Law (2026).

About Christopher Guerreiro: Christopher Guerreiro is an attorney based in Toronto, ONTARIO. The practice focuses on IP and Real Estate.

Areas of practice

Practice focus

Christopher Guerreiro represents clients across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About Christopher Guerreiro

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.

Recognition

Awards & honors

  • Best Lawyers in America — Intellectual Property Law

    2026

Locations

Office locations

Main office

155 Wellington Street West, 40th Floor

Toronto, Ontario

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Frequently asked

Common questions

  • What areas of law does Christopher Guerreiro practice?

    Christopher Guerreiro focuses on IP and Real Estate.

  • Is Christopher Guerreiro a verified attorney?

    Christopher Guerreiro's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with Christopher Guerreiro?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 416-863-0900.