Matthew is a partner in the Competition, International Trade and Foreign Investment Group of our Toronto office. He specializes in cross-border compliance and dispute resolution under trade agreements, investment treaties and Canadian law.
He assists business and government clients from around the world in trade negotiations and disputes under agreements such as the WTO Agreement, the USMCA and the CPTPP; in trade remedy proceedings; and in navigating economic sanctions and export control laws.
Matthew has led legal teams in WTO panel and Appellate Body proceedings in matters involving subsidies, dumping, sanitary and phytosanitary measures, technical barriers and tariffs, and in investment arbitrations under the NAFTA.
Matthew was previously Director-General of the Government of Canada’s Trade Law Bureau (from 2009–2012) and served in the Bureau for fifteen years. He was Canada’s chief legal counsel in the negotiation of the CETA with the European Union and various other trade and investment treaty negotiations. He began his career as a foreign service officer, including a posting to the Canadian Embassy in Washington, D.C., where he focused on trade and economic sanctions legislation and trans-border resource and environmental issues.
Matthew teaches international trade and investment arbitration as an adjunct professor at the University of Toronto’s Faculty of Law and is appointed to Canada’s rosters of panelists under the USMCA and the CETA.
Representative Work
- GE Healthcare Technologies Inc.
GE HealthCare in its agreement to acquire Intelerad for US$2.3 billion
- Xanadu Quantum Technologies Inc.
Xanadu in its cross-border de-SPAC transaction
- Ontopical
Ontopical in its acquisition by SOVRA
- Purolator
Purolator in its acquisition of Livingston International
GE HealthCare in its agreement to acquire Intelerad for US$2.3 billion
Xanadu in its cross-border de-SPAC transaction
Ontopical in its acquisition by SOVRA
Purolator in its acquisition of Livingston International
Alberta Softwood Lumber Trade Council in trade remedy and dispute settlement proceedings in the Canada-US softwood lumber dispute
Government of the United Kingdom in the negotiation of four free trade and investment agreements and accession to the Comprehensive and Progressive Agreement for Trans-Pacific Partnership
A Canadian dairy industry association in USMCA and CPTPP disputes regarding tariff-rate quota administration
Canusa Wood Products Limited, Hardwoods Specialty Products LP, McCorry & Co. Ltd. and Panoply Wood Products Inc. in a trade remedy investigation and judicial review proceedings
Ashley Furniture Industries LLC and Violino Hong Kong Ld. in a Canadian International Trade Tribunal injury inquiry
CIMC Vehicles (Group) Co., Ltd. and Groupe St-Henri in a Canadian International Trade Tribunal injury inquiry
An SOE in a Gulf state with respect to the application of investment treaty obligations
A Canadian mining company with respect to a potential investment treaty dispute
The investment arm of a Canadian financial institution with respect to Russia-related sanctions compliance by an acquisition target
International maritime transportation companies with respect to the operation of Canadian economic sanctions and export controls
Latest Insights
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Osler Update February 23, 2026
U.S. Supreme Court strikes down IEEPA tariffs, but global tariff introduced
The U.S. Supreme Court has ruled that all tariffs imposed by the Trump administration under the International Emergency Economic Powers Act are...
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Osler Update December 30, 2025
Canada further shuts its market to steel imports – CBSA guidance released
On December 11, 2025, Canada issued steel import restrictions, effective December 26, 2025, with a 25% surtax on many steel derivatives.
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Osler Update December 16, 2025
Canada further shuts its market to steel imports
We recap the new restrictions and their implications for Canadian businesses.
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Report December 4, 2025
International trade: navigating the rapidly changing landscape
Global trade dynamics were in a state of flux in 2025, driven primarily by the constant shifts in U.S. tariffs.
Read more
Awards and Recognition
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Chambers Canada: Canada’s Leading Lawyers for Business: Recognized in International Trade/WTO – Nationwide (Band 1)
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Chambers Global: The World’s Leading Business Lawyers 2023: International Trade/WTO
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The Canadian Legal Lexpert Directory 2025: International Trade Regulation
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Lexpert’s Leading 500 Cross-Border Lawyers: A Guide to Doing Business in Canada: Recognized in International Trade Regulation
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The Legal 500 2023: International Trade
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Who’s Who Legal: Trade and Customs
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Best Lawyers in Canada: International Trade and Finance
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Ontario Bar Association Award of Excellence in International Law 2017
Media Mentions
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Osler News February 12, 2026
Osler recognized as a leading firm in Chambers Global 2026 Guide
Osler has once again been recognized as a leading firm in the Chambers Global Guide, which evaluates firms based on the sophistication of their...
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Media Mentions July 15, 2025
U.S. dairy industry presses Canada for changes to quota – The Globe and Mail
Matthew Kronby spoke to The Globe and Mail about Canada’s supply management system and the rules-based trading.
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Media Mentions March 20, 2025
At the front lines of the trade war: what’s exempt, what isn’t, and what’s still to come – Financial Post
Matthew Kronby spoke to the Financial Post about the complicated arithmetic companies face about how to approach their exports.
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Osler News February 13, 2025
Osler recognized as a leading firm in Chambers Global 2025 Guide
Osler has been recognized as a leading firm in the Chambers Global 2025 Guide.
Read more
Community Involvement
- TradeLab (Queen’s University), Mentor
Speaking and Writing
Speaking Engagements
AccessPrivacy Monthly Call: Legislative reform and public policy amid global tariff tensions: implications for Canadian privacy, AI and data regulation
Read moreCanada’s forced and child labour import ban: apparel sector risks
Read moreCanada’s Forced Labour Import Ban and Other Energy-Related Trade Issues
Read more“Market access in the Canada-US-Mexico Agreement”, XII Specialized Course on International Trade (ICC Mexico – Universidad de Monterrey), February 2, 2023
“Navigating trade conflicts in the new global environment”, International Bar Association Annual Conference, Miami, USA, November 3, 2022
“Trade Policy: What Matters to Canadian Business?” Queen’s Institute on Trade Policy, November 18, 2021
Co-moderator, “Hot topics in international sales, trade, franchising and product law,” International Bar Association Annual Conference, Seoul, South Korea, September 23, 2019.“WTO Year Ahead”, 40th Annual Georgetown Trade Law Update, Washington, DC, March 7, 2019
Speaker, “CETA Workshop,” CETA Market Access Program for EU Business, Toronto, November 8, 2018.
Published Work
“Modern Slavery and Forced Labor Laws: Overview”, Thomson Reuters, December 2025
Credentials
Education
- University of Toronto, LL.B.
- McGill University, B.A. (Hons.)
Languages
- English
Professional Affiliations
- International Bar Association International Trade and Customs Law Committee, Co-Chair
- International Law Association Canada, Vice-President and Director
- Canadian Bar Association International Law Section
