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Patrick G. Duffy

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(416) 869-5257

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Patrick G. Duffy
Law Practice
Patrick Duffy is a partner in the Toronto office of Stikeman Elliott. Mr. Duffy has a project development practice that includes environmental permitting and litigation, energy regulation, and aboriginal engagement. He has considerable experience dealing with environmental assessments and other regulatory approvals in a variety of sectors, including renewable and non-renewable electricity generation, electricity transmission, mining, transit and transportation, aggregate quarries, and waste management.

Mr. Duffy is an experienced advocate and has appeared before the Supreme Court of Canada, the Federal Court of Canada, all levels of courts in Ontario and a variety of administrative tribunals, including regular appearances before the Ontario Energy Board, the Environmental Review Tribunal and the Ontario Municipal Board. Mr. Duffy has acted for both provincial and municipal governments and many of his cases involve administrative or public law issues.

Mr. Duffy has developed an expertise in public procurement processes. He has been involved in all stages of public procurement processes in a number of sectors on both the customer and bidder side. He has helped draft the terms of a public procurement, assisted proponents in responding to procurements, and represented proponents in procurement related-litigation.

Mr. Duffy is recognized by both the 2015 Chambers Global's The Guide to the World's Leading Lawyers for Business and the 2016 Chambers Canada guide in the area of Energy: Power (Regulatory) Law. He is also recognized in The Canadian Legal Lexpert Directory 2017 in the area of Energy (Electricity).

Professional Activities
Mr. Duffy is a member of the Law Society of Upper Canada, the Law Society of Alberta, the Advocates' Society and the American Bar Association (Section of Environment, Energy and Resources). Mr. Duffy is a member of the executive of the Aboriginal Law Section of the Ontario Bar Association. He is also actively involved with the Phillip C. Jessup International Law Moot.

University of Alberta (LL.B. with distinction 2002), University of Lethbridge (BA with great distinction 2002).

Mr. Duffy was the clerk for Mr. Justice Michael Kelen of the Federal Court of Canada, Trial Division, 2002-2003. He served as counsel for the Independent Electricity System Operator (IESO) during a one-year secondment in 2007. He has also completed the Intensive Trial Advocacy Workshop and the Canadian Gas Association's Regulatory Course and a course on Public Procurement Law.

Bar Admission
Alberta, 2004
Ontario, 2004

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