Canadian, U.S. and international businesses and law firms come to Osler’s Competition/Antitrust and Foreign Investment Group with their most challenging problems and business critical transactions – and Osler answers with our blend of outstanding expertise, exceptional and efficient service, and seamless support to clients of all sizes and in all industries.
Osler has one of the leading practices in Canada for transactions raising complex competition and Investment Canada Act (ICA) matters. Our team is highly active with extensive experience advising on high-profile and strategic matters requiring competition law and foreign investment experience.
Our deep specialization allows us to identify issues, be exceptionally responsive and provide outstanding service in an area that is often highly complex and critical to the success of key business decisions.
- As the pre-eminent mergers and acquisitions firm in Canada, our competition/antitrust lawyers cut their teeth on transactions. Our ability to rapidly and effectively navigate regulatory processes, and game-changing amendments to the Canadian competition environment, is unsurpassed in the Canadian market.
- Having been involved in virtually every Canadian and cross-border competition-related class action, Osler offers strategic insights and counsel to clients facing or managing competition litigation.
- Osler’s team has achieved positive results for our clients faced with investigations or potential prosecutions by drawing on our substantial experience in advocating and negotiating effectively with investigators and prosecutors. Our clients value this expertise and insight.
- We are leaders in implementing best practices in project management and process improvement. This is critical as the Competition Bureau has been building its litigation capability, has significantly increased its use of formal powers to require burdensome document production in merger matters and to obtain court orders for production in civil investigations and has increased enforcement action leading to litigation before the Competition Tribunal and courts.
Our team’s expertise is formidable and deep. Ask Osler’s competition/antitrust lawyers about:
- Abuse of Dominance and Monopolization
- Antitrust Counselling and Compliance
- Cartels and Bid Rigging
- Class Action Litigation
- Competition Litigation
- Competitor Collaborations/Strategic Alliances
- Criminal Defence
- Government/Regulatory Investigations
- Investment Canada Act and Foreign Investment
- Mergers, Acquisitions and Joint Ventures
- Misleading Advertising and Deceptive Telemarketing
- Pricing Practices and Distribution Strategies (price maintenance, tied selling, refusals to deal)
- Search and Seizure
Key Contacts
Chair
Partner, Competition/Antitrust and Foreign Investment, Toronto
Partner, Competition/Antitrust and Foreign Investment, Calgary
Partner, Competition/Antitrust and Foreign Investment, Toronto
Partner, Competition/Antitrust and Foreign Investment, Toronto
Latest Insights
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Osler Update November 20, 2025
PE Points Newsletter
Osler’s National Private Equity Group has launched its quarterly PE newsletter: your source of private equity news and information.
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Osler Update October 21, 2025
Key competition law considerations when transferring portfolio businesses to continuation vehicles
Transferring a portfolio business to a continuation vehicle may be subject to mandatory notification under the Competition Act.
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Osler Update June 30, 2025
Canada announces ‘major’ additional sanctions on Russia
Canada’s recent “biggest-ever” package of Russia sanctions expand but do not fundamentally change Canada’s sanctions on Russia.
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Osler Update June 25, 2025
Competition Bureau releases updated guidance on enforcement approach to property controls
The CPC Guidance published by the Competition Bureau advocates that firms use property controls only where justified.
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Stay up to date with our latest insights
SubscribeAwards and Recognition
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Chambers Canada: Canada’s Leading Lawyers for Business: Recognized in Competition/Antitrust
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Chambers Global: The World’s Leading Lawyers for Business: Recognized in Competition/Antitrust
- “The team of leading practitioners in Osler’s competition/antitrust and foreign investment law group are at the forefront of emerging competition issues in Canada and abroad, and offer the insight required to complete business critical transactions.”
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The Canadian Legal Lexpert Directory: Recognized in Competition Law (Toronto, Ontario)
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Legal 500: Recognized in Competition and Antitrust
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Global Competition Review: Recognized in Competition Law
In the Media
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Media Mentions November 10, 2025
Free-trade zones in the U.S. provide Canadian companies with options for tariff relief –The Globe and Mail
To manage costs related to American-imposed tariffs, some Canadian companies have turned to federally designated regions in the United States...
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May 2, 2025
Stephen Poloz on the long-term effects of tariffs – BBC Talking Business
The adjustments in the equity markets to the tariff wars are minor compared to the longer-term implications for the economy, says Osler Special...
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Osler News April 1, 2025
Four Osler lawyers selected as 2025 Franchise Times Legal Eagles
Osler is proud to announce that four of our lawyers have been selected as 2025 Franchise Times Legal Eagles.
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Media Mentions March 26, 2025
Economic insights with Stephen Poloz – Boom and Bust
Canada has done its best to prepare for what may lie ahead, Special Advisor Stephen Poloz says during a Boom and Bust interview.
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