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Simon Sigler

Associate, Calgary

Simon is an associate whose practice focuses on Indigenous and Commercial litigation matters. Simon has appeared before the Federal Court, the Federal Court of Appeal, all levels of court in Ontario, and the Courts of King’s Bench in Alberta and Saskatchewan. Simon has appeared as lead counsel at the Supreme Court of Canada.
Simon Sigler 768x510

Experience

Outside of Canada, Simon has appeared before the Civilian Board of Contract Appeals in the United States of America.

Simon’s Indigenous practice involves advancing treaty claims, land claims, environmental claims, and treaty benefits claims on behalf of First Nations.  Simon’s experience extends both to advancing claims through the courts, the Specific Claims Process and Tribunal, and through a Ministerial Special Representative. In addition, Simon has noted experience in First Nation side governance litigation including judicial review of Chief and Council decisions, election appeals, and removals of Chiefs and Councillors.

Other notable experience includes representing a mine designer on the construction of a multi-billion-dollar greenfield potash mine, representing a contractor on the construction of a carbon capture facility, “bet-the-company” litigation, oppression and derivative actions, and several other contract disputes. Simon has also defended complex fraud and failed investments disputes with over twenty parties to a single proceeding.

Lastly, Simon has extensive public law experience with particular attention to judicial reviews, administrative law, and appeals.

Simon is also the co-author of two chapters, Rule 16 – Service of Documents and Rule 17 – Service Outside of Ontario, in the Canadian Legal Information Institute’s (CanLII) textbook Civil Practice and Procedure in Ontario.

Education

LL. B, (Honours), The University of Edinburgh, Edinburgh Law School, 2013

Professional Memberships & Affiliations

  • Member of the Law Society of Ontario 2018
  • Member of the Law Society of Alberta 2022
  • The Advocate’s Society
  • Canadian Bar Association
  • Calgary Bar Association
  • Ontario Bar Association, Civil Litigation Section, Section Executive (Former)
  • Called to the Alberta Bar in 2022

Publications

Civil Procedure and Practice in Ontario, Canadian Legal Information Institute, 2nd ed, 2022, Rules of Civil Procedure Chapters, Rule 16 – Service of Documents

Civil Procedure and Practice in Ontario, Canadian Legal Information Institute, 2nd ed, 2022, Rules of Civil Procedure Chapters, Rule 17 – Service Outside of Ontario

Articles

Gitxaala v. British Columbia: First Nations can rely on UNDRIP to protect their rights

Quebec (Attorney General) v Pekuakamiulnuatsh Takuhikan, 2024 SCC 39: Expanding the Application of the Honour of the Crown