Casey W Halladay

Ranked in 2 Practice Areas

Band 3

Competition/Antitrust

Nationwide - Canada

9 Years Ranked

Band 4

Competition/Antitrust: Litigators

Nationwide - Canada

1 Years Ranked

Ranked in Guides

Global 2024

About

Provided by Casey W Halladay

Canada

Practice Areas

Casey is one of Canada’s leading competition lawyers, with a practice covering merger control, cartel defence, and antitrust litigation. He brings an analytical approach to competition law issues that is unique in the Canadian profession, having practiced with leading firms in Toronto, Washington and London. He has been named one of the world’s top 40 competition lawyers under 40 (Global Competition Review, 2012), one of the top 40 lawyers in Canada under 40 (LEXPERT, 2012), and is a two-time Finalist for GCR’s worldwide “Lawyer of the Year - Under 40” Award (2014, 2013). His Harvard Law School LLM thesis on competitor collaborations under the Sherman Act was a selected runner-up in the international Swope Antitrust Writing Competition. Casey is admitted to practice in Ontario, New York, and England & Wales. He is a longtime member of the Leadership of the ABA Section of Antitrust Law, including serving as a member of the section’s governing Council.

Career

Ontario, 2002; New York, 2006; Solicitor (non-practising), England and Wales, 2009

Chambers Review

Provided by Chambers

Canada

Competition/Antitrust - Nationwide - Canada

Band 3

Individual Editorial

Casey Halladay represents clients before the Competition Bureau in the review of high-value acquisitions, as well as in investigations into possible abuses of dominance and price fixing.

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Competition/Antitrust: Litigators - Nationwide - Canada

Band 4

Individual Editorial

Casey Halladay represents clients before the Competition Bureau in the review of high-value acquisitions, as well as in investigations into possible abuses of dominance and price fixing.

View ranking table

Strengths

Provided by Chambers

Casey has a rare combination of legal knowledge, practical experience with regulators, and an ability to understand our unique business needs, which allows him to provide targeted and useful advice.

Competition/Antitrust respondent
Canada

Casey is really responsive and commercial, with excellent client skills. He is very plugged into the local regulators and understands how Canadian law fits into the wider picture.

Competition/Antitrust respondent
Canada

Casey has a rare combination of legal knowledge, practical experience with regulators, and an ability to understand our unique business needs, which allows him to provide targeted and useful advice.

Competition/Antitrust respondent
Canada

Casey is really responsive and commercial, with excellent client skills. He is very plugged into the local regulators and understands how Canadian law fits into the wider picture.

Competition/Antitrust respondent
Canada

Filter by

Alberta

Corporate/Commercial

Alyson Goldman

Band 2

Casey W Halladay

Canada Guide 2025

Competition/Antitrust + 1 more ranking

About

Practice Areas

Career

Chambers Review

Canada

Competition/Antitrust - Nationwide - Canada

Individual Editorial

Competition/Antitrust: Litigators - Nationwide - Canada

Individual Editorial

Strengths

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Alberta

British Columbia

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