Sujin Chan-Allen’s practice focuses on antitrust and international trade law, WTO litigation, and trade negotiations.

Sujin has been involved in the largest and most complex mergers of the recent years. She also advises clients in State aid cases and trade law matters.

Sujin joined the firm as an associate in 2016. Prior to joining the firm, she was counsel at the Trade Law Bureau of the Department of Foreign Affairs, Government of Canada. She has also previously served as a litigator at a tribunal with the Government of Ontario, Canada. She is currently on secondment.

Notable Experience

  • The Dow Chemical Company in its $130 billion merger of equals with DuPont.

  • Essilor in its €46 billion combination with Luxottica.

  • The Walt Disney Company and 21st Century Fox on competition matters related to Disney’s $71.3 billion acquisition of 21st Century Fox assets.

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Selected Activities


France, Germany, UK Launch INSTEX to Facilitate Trade With Iran,” March 11, 2019.

New EU-wide Foreign Direct Investment Screening System Approved,” February 20, 2019.

The EU and UK Agree on Arrangements for Brexit Transition Period and Future Relationship Framework,” December 7, 2018. 

UK Parliament Passes Trade and Customs Legislation in Shadow of Brexit Uncertainty,” October 9, 2018.

EU Lists U.S. Products Targeted for Retaliatory Tariffs, Opens Consultations,” March 22, 2018.

The Clash of Steel: U.S. Tariffs Imminently In Force, Canada and Mexico Exempt,” March 12, 2018.

European Commission’s Call for Proposals on Regulatory Cooperation under CETA,” February 12, 2018.

“In Consideration of an EU-China Free Trade Agreement: Key Issues on State Aid and Subsidies,” China Antitrust Law Journal, Vol. 1, 2017.

“Beyond Special and Differential Treatment: Key Trends of Importance to East Asian Regionalism,” Taiwan Yearbook of International Law, Vol. 29, 2011.


Panelist: “International Trade Law: Regionalism in the WTO System”, 6th Biennial Conference of the Asian Society of International Law, Seoul, Korea. August 25, 2017.

Panelist: “Brexit – Repercussions for Canada?” Canadian Council on International Law, 45th Annual Conference, November 3-5, 2016.

“Beyond Special and Differential Treatment: Key Trends of Importance to East Asian Regionalism,” International Law Association Asia-Pacific Regional Conference, Taipei, Taiwan, May 29, 2011.