Mr Leonard Griffiths > Bennett Jones LLP > Toronto, Canada > Lawyer Profile

Bennett Jones LLP
PO BOX 130

Work Department



Partner, Head of Environmental


Leonard is certified by the Law Society of Upper Canada as a specialist in environmental law. Through his broad-based environmental practice, Len assists clients with corporate transactions including mergers, acquisitions and financings, environmental management systems and litigation. He represents clients before administrative tribunals and defends clients charged with environmental offenses. Len counsels clients on matters regarding air, water, hazardous and non-hazardous wastes, occupational health and safety, and a wide range of other regulatory issues. He assists clients domestically and internationally to develop and undertake major projects and transactions. He also conducts environmental assessments and compliance audits and has been involved in the decommissioning and remediation of many facilities and properties (brownfields). Len is past vice-chair of the Environmental Specialist Committee for the Law Society of Upper Canada, past chair of the Environmental sections of the Canadian Bar Association and Ontario Bar Association, and a founder of the Canadian Centre for Environmental Arbitration and Mediation. Len is the editor and a contributing author of Contaminated Property in Canada and Sustainable Development in Canada: Into the Next Millennium (2000), and is the chief editor of The Environmental Law Journal. He composed a chapter in Directors’ Duties in Canada, 4th Edition, published in Canada by CCH Canadian Limited in 2009. Len presents at conferences in Canada and the United States on a variety of environmental, health and safety issues. Len is an Adjunct Professor, University of Toronto Law School (Natural Resources and Energy; Sustainability). He is a founder and director of the Mississauga Wolverines Youth Basketball league.


Carleton University, B.A., 1980 | University of Toronto, LL.B., 1983

Lawyer Rankings

Canada > Environment

(Hall of Fame)

Leonard GriffithsBennett Jones LLP

Bennett Jones LLP’s comprehensive environmental law practice is distinguished by its broad practice scope, with strong skill sets in project development, operational matters, transactional support and litigation. Leveraging the wider firm’s premier oil and gas practice, the group is particularly recognized for its experience in energy and natural resources-related work but it also handles matters in the real estate, infrastructure, food processing and manufacturing spheres, among others. Go-to Toronto-based specialist Leonard Griffiths co-heads the national department alongside Vancouver managing partner Radha Curpen. The deep bench also draws on Calgary-based regulatory lead Brad Gilmour; Toronto-based climate change co-head Sarah Gilbert, whose practice spans a mix of environmental, and health and safety issues; and Calgary-based energy regulatory specialist Martin Ignasiak, who recently joined the team from Osler, Hoskin & Harcourt LLP.