Brendan MacArthur-Stevens
Associate | Calgary
Calgary: 403-260-9603

Brendan has a broad commercial and civil litigation practice. He has experience in a variety of areas, including arbitration, insurance coverage and defence, intellectual property litigation, constitutional law, franchise disputes, oil and gas litigation, and aboriginal law.  Brendan has appeared before the Alberta Court of Queen's Bench, the Federal Court of Canada, the Court of Appeal of Alberta, and the Supreme Court of Canada.

He completed his J.D. at the University of Toronto, where he was elected President of the Students' Law Society. Upon graduation, he was awarded the Cecil A. Wright Dean's Key and the James B. Milner Bronze Medal.

Brendan was a Summer Student at Blakes in 2012 and 2013 at the Firm's Toronto office. Before returning to the Firm in Calgary, he clerked for the judges of the Court of Appeal for Ontario, and then for the Honourable Justice Andromache Karakatsanis of the Supreme Court of Canada.


Recent matters in which Brendan has been involved include:

  • Representing the respondent, ATB Financial, in a case before the Supreme Court of Canada involving the constitutional doctrine of federal paramountcy, insolvency law, and statutory interpretation

  • Representing a public-interest organization to successfully obtain intervener status in the Alberta Court of Queen's Bench and to make submissions regarding the constitutionality of an Alberta law which facilitates Gay-Straight Alliances and protects the privacy of LGBTQ+ youth (injunction decision reported at P.T. v. Alberta, 2018 ABQB 496)

  • Representing a First Nation in a four-week trial in the Alberta Court of Queen’s Bench involving allegations of unjust enrichment and breach of duties by the Federal Crown

  • Representing the National Hockey League in the Alberta Court of Queen's Bench to successfully obtain a stay in favour of arbitration of a claim involving an on-ice incident between a referee and a player

  • Successfully representing a large energy services company in a five-week intellectual property trial in the Federal Court of Canada, involving both patent infringement and patent validity issues (reported at Packers Plus Energy Services Inc. v. Essential Energy Services Ltd., 2017 FC 1111)

  • Assisting a multinational corporation in enforcing and objecting to requests from foreign courts for international assistance in both criminal and civil proceedings, including requests under Canada’s Mutual Legal Assistance in Criminal Matters Act

  • Advising a large company with respect to plan of arrangement proceedings before the Yukon Supreme Court and the Yukon Court of Appeal

  • Advising a public body regarding its statutory powers under its home statute and its disclosure obligations under Alberta's Freedom of Information and Protection of Privacy Act

  • Advising a global hotel group with respect to defending urgent injunction proceedings

Show Past:
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Blakes Bulletin on Restructuring & Insolvency, January 31, 2019.
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Co-speaker: The Art of Arbitration: Role of In-House Counsel
In-House Counsel Network Luncheon Seminar, Calgary, Alberta, May 17, 2018.
Speaker: Top Five Court Decisions with a Significant Impact on Business
Blakes Business Class Seminar, Calgary, Alberta, January 31, 2018.
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