Mark is a Toronto based litigation lawyer focused on regulated sectors, representing consumer and stakeholder interests before courts, agencies, and tribunals. Mark also provides advice and complex legal opinions and on a wide-range of regulatory issues.

Mark has a significant energy regulatory practice, and frequently appears before the Ontario Energy Board representing clients in utility distribution and transmission rate applications, leave to construct proceedings, policy consultations, IESO market rules reviews, complaints, and a wide variety of other matters. He also provides advice to energy sector participants regarding the interpretation of codes, rules and practices.

Mark is a member of the Ontario Energy Board’s Adjudicative Modernization Committee as well as a number of other working and advisory groups. Mark has most recently been recognized in the 2024 edition of ‘Best Lawyers’ in Canada for Energy Law/Energy Regulatory Law/Public & Administrative Law, and was named their 2023 “Energy Regulatory Lawyer of the Year in Toronto”. He also been included as a leading lawyer for Energy – Power (Regulatory) in the 2024 edition of the Chambers Canada Guide.

Mark has also represented clients on numerous occasions before the Divisional Court, Court of Appeal, and Supreme Court of Canada on appeals and judicial reviews.

Mark obtained his B.A (Honours) from Carleton University and his J.D. from Queen’s University. Mark is a member of the Canadian Bar Association, Ontario Bar Association, and The Advocates’ Society. He currently sits on the executive of the Ontario Bar Association’s Administrative Law Section and is a past Chair of the Natural Resources and Energy Law Section.