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Alexis Vaughan listen


Alexis* is an associate at Lenczner Slaght, who practices intellectual property law. She applies her background in neuroscience and clinical research to think critically and find solutions for her clients. Alexis is also a former a national soccer referee who officiated in professional leagues and international competitions. Whether on the field or in the courtroom, Alexis has shown time and again that she always keeps§ her composure when pressure begins to mount. This poise was forged throughout her career as an athlete and now serves her well as a tenacious advocate. Alexis has competed for the University of Toronto on both the varsity soccer and fencing teams, and as a former international goalkeeper, she has learned to maintain her cool , remaining unflappable in the face of immense pressure. She has an acute understanding that quality should never be compromised, even when the situation gets heated. .


  • Practice Areas:
  • Bar Admissions:
    • Ontario (2019)
  • Education:
    • University of Toronto (2018) JD
    • Humber College (2012) Postgraduate Certificate in Clinical Research (Honours)
    • University of Toronto (2010) HBSc (Human Behavioural Biology and Psychology with Distinction)


Alexis Vaughan (she/her)

is an associate at Lenczner Slaght.

Alexis’ practice encompasses a broad range of intellectual property litigation. She has assisted with matters before the Federal Court of Canada, including copyright, trademark, and patent infringement trials. Alexis has advised clients on various regulatory matters, including those related to drugs, medical devices, natural health products, tobacco products, and cannabis.

Prior to joining Lenczner Slaght, Alexis summered, articled, and practiced intellectual property law at an international law firm.

Alexis received her JD from the University of Toronto, where she volunteered at various legal clinics including the International Human Rights Program, Aboriginal Legal Services Toronto, and Downtown Legal Services – in the criminal division as well as the Health Professions Appeal and Review Board. In her graduating year, Alexis received the Gordon Cressy Student Leadership Award in recognition of her outstanding extra-curricular contributions.

Prior to attending law school, Alexis completed her degree in Human Behavioural Biology at the University of Toronto and then worked at the Princess Margaret Cancer Centre as a clinical data and regulatory coordinator. Her area of focus was phase I to III clinical trials in medical oncology and hematology.

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  • Canadian Bar Association

  • Ontario Bar Association

  • Intellectual Property Institute of Canada - Copyright Committee (2021-present)

  • The Advocates' Society

  • Inside or Out: Jurisdiction in the Context of Copyright

    The application of the test for jurisdiction in the copyright context can sometimes be an exercise in gut feel. Luckily for litigants who prefer to make decisions based more on case law than feelings, the Divisional Court recently provided clarification on the application of the test for jurisdiction for statutory torts, like copyright infringement. The Ontario Divisional Court’s decision in Pourshian v Walt Disney Company (“Pourshian”), an appeal of a motion for an order to stay the plaintiff’s copyright infringement action on the basis of lack of jurisdiction, will hopefully take some of the guess work out of jurisdictional issues in the future.

    Margaret Robbins & Alexis Vaughan | October 26, 2021

  • Door Left Open for Use of Foreign Patent Prosecution History

    Since its enactment in 2018, section 53.1 of the Patent Act has been the subject of much discussion. This provision allows courts tasked with construing the claims of a patent to consider communications previously made by the patentee to the Canadian Patent Office in the course of patent prosecution (known as the “prosecution history” or the “patent file wrapper”). Recently, the Federal Court has provided differing interpretations regarding the limitations of this section.

    Andrew Moeser & Alexis Vaughan | January 25, 2021

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