Department profile
Osler, Hoskin & Harcourt LLP

Litigation: General Commercial

Canada Guide 2027 : Alberta

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Osler, Hoskin & Harcourt LLP

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About

Provided by Osler, Hoskin & Harcourt LLP

With active matters in all western provinces, Osler’s litigation group has strong expertise and a proven track record in Western Canada. The Western Canada Litigation Practice includes (i) Disputes / Litigation, (ii) Regulatory / Environmental / Indigenous / Land Litigation and (iii) Tax Litigation. Osler prides itself on its “one-firm” approach and its teamwork – within Western Canada, nationally, and among practice areas. Osler’s litigation team focuses on business-critical litigation and, in so doing, has become a recognized leader in corporate commercial, securities, governance, class action, energy, construction, tax, administrative, major projects, natural resources and renewable energy, indigenous, constitutional, and environmental law litigation.

Chambers Review

Provided by Chambers

Litigation: General Commercial - Alberta

Band 2

What the Team is Known For

Osler, Hoskin & Harcourt houses a high-level commercial and energy industry disputes practice rated for its strong bench of experienced litigators. The Calgary group has a solid track record in high-stakes breach of contract litigation, as well as experience in a range of other areas including class proceedings, securities litigation and shareholder disputes. The group has also represented clients in litigation relating to constitutional and administrative law. The team leverages the firm's strong national platform to provide high-quality advice on multi-jurisdictional files. Clients also benefit from the firm's complementary practices in regulatory and appellate litigation.

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Work Highlights

Provided by Chambers

  • Osler, Hoskin & Harcourt LLP represented Trans Mountain in all court proceedings related to the Trans Mountain Expansion Project, including judicial reviews, constitutional claims and contempt proceedings.

Strengths

Provided by Chambers

  • Osler has a very strong multifaceted team, and its depth and dedication are exemplary.

    Litigation: General Commercial respondentCanada

  • The Osler, Hoskin & Harcourt team is excellent at translating litigation strategy into practical application. Their provincial understanding is invaluable.

    Litigation: General Commercial respondentCanada

  • Osler, Hoskin & Harcourt team is highly strategic and has great communication. They are excellent litigators.

    Litigation: General Commercial respondentCanada

Notable Practitioners

Provided by Chambers

  • Maureen Killoran
    Maureen Killoran

    Maureen Killoran

    Maureen Killoran KC is recognised for her handling of major litigation files in the energy and natural resources sector. Her experience includes representing both public bodies and private clients in constitutional challenges, appellate proceedings and judicial reviews, alongside her commercial dispute resolution practice. She is Osler, Hoskin & Harcourt's national co-chair and splits her time between the Calgary and Vancouver offices.

    • Maureen is very well versed in the law and highly commercial.

      Litigation: General Commercial respondentCanada
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  • Tristram Mallett
    Tristram Mallett

    Tristram Mallett

    Skilled corporate litigator Tristram Mallett is noted for his expertise with contentious securities and M&A mandates. He has also represented clients in product liability, privacy and contractual lawsuits, covering both single-plaintiff and class proceedings. He is based in Osler, Hoskin & Harcourt's Calgary office.

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  • Olivia Dixon
    Olivia Dixon

    Olivia Dixon

    Olivia Dixon acts for clients in a range of commercial disputes, with a particular focus on energy litigation, construction litigation and international commercial arbitration. She is based in Osler, Hoskin & Harcourt's Calgary office.

    • Olivia is fantastic. She understands our business and is able to translate that knowledge into compelling strategy.

      Litigation: General Commercial respondentCanada
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  • Sean Sutherland
    Sean Sutherland

    Sean Sutherland

    Sean Sutherland is a litigator focused on high-stakes business disputes, representing clients in complex oil and gas, environmental and regulatory matters. Clients also benefit from his Aboriginal expertise.

    • Sean is an excellent communicator, and he is always on top of cases.

      Litigation: General Commercial respondentCanada

    • Sean is well versed in the nuances of cases.

      Litigation: General Commercial respondentCanada
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  • Matthew Huys
    Matthew Huys

    Matthew Huys

    Matthew Huys is a Calgary-based litigator with particular experience in the construction and energy sectors.

    • Matthew knows how to digest a complex problem and turn it into a viable solution, and he has excellent written and oral advocacy skills.

      Litigation: General Commercial respondentCanada
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Ranked Individuals at Osler, Hoskin & Harcourt LLP (5)

Alberta

Members

Provided by Osler, Hoskin & Harcourt LLP

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