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Sean has a broad civil litigation practice, acting in complex commercial and contractual disputes, professional liability and regulation, and administrative, public, and constitutional law matters. He leverages his diverse professional background to provide pragmatic legal solutions.
Prior to joining Adair Goldblatt Bieber, Sean served as a law clerk at the Court of Appeal for Ontario to Justices Hoy, Paciocco, and Jamal (now of the Supreme Court of Canada), after which he worked at another prominent commercial litigation boutique in Toronto. Sean completed his articles at the Constitutional Law Branch of Ontario’s Ministry of the Attorney General and contributed as a legal researcher for the Long-Term Care Homes Public Inquiry led by Justice Eileen Gillese.
Sean is a talented advocate with a deep passion for the law. While studying at McGill University, he advised and represented students at university hearings as the Director of Student Advocacy for the Legal Information Clinic. He was also a Senior Editor for the McGill Law Journal and competed in the Wilson Moot, where his team won top factum and placed second overall. Sean has both civil and common law degrees and can assist clients in French and English.
Prior to law, Sean pursued a master’s in political science and completed a non-partisan parliamentary internship program. Assisting both government and opposition Members of Parliament, Sean developed strong foundations in advocacy and negotiation.
- Member, The Advocate’s Society
- Member, Toronto Lawyers Association
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Aghdasi v. Asiyaban
2024 ONSC 3472
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Canada (Attorney General) v. Al Jabri
2023 FC 1338
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Rose-Isli Corp. v. Frame-Tech Structures Ltd.
2023 ONSC 832, 2023 ONCA 548
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Sakab Saudi Holding Company v. Saad Khalid S Al Jabri
2021 ONSC 7681, 2023 ONSC 2488
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Jonker v. Township of West Lincoln
2023 ONSC 194
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PBO Free Legal Advice Hotline sponsor day day at AGB!
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AGB lawyers judge University of Toronto moot
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AGB welcomes Sean Pierce to the partnership
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AGB lawyers obtain significant punitive damages award for “malicious” litigation conduct
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AGB protects solicitor-client privilege amid allegations of civil fraud
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Adair Goldblatt Bieber represents former MP Raj Grewal in lawsuit against RCMP and Attorney General
Expertise
Bar Admissions
- Ontario, 2019
Clerkships
- Court of Appeal for Ontario (Justices Jamal, Hoy, and Paciocco)
Education
- BCL/LLB, McGill University, 2018
- MA, Queen’s University, 2012
- BA (Honours), Queen’s University, 2011