About Eric K. Gillespie Professional Corporation

Eric K. Gillespie Professional Corporation is a small Toronto litigation firm focused on environmental, administrative, and municipal law, along with civil litigation that includes judicial reviews and class actions. Eric Gillespie has operated the firm under its current professional corporation structure since 2009, working from an office at 393 University Avenue in downtown Toronto. The firm represents ratepayer and community groups, municipalities, corporations, non-governmental organizations, First Nations, and individual clients across Ontario and Canada, appearing before all levels of Ontario's courts, the Supreme Court of Canada, and administrative tribunals such as the Environmental Review Tribunal.

Eric Gillespie graduated with Distinction from the University of Western Ontario Law School in 1994, received the Cassels Brock Practice Skills Award, and was called to the Ontario bar in 1996 after articling in part with the Canadian Environmental Law Association. The firm's work has included Pearson v. Inco, which the University of Toronto Faculty of Law describes as the largest certified environmental class action in Canada to date, and a 2020 settlement of a decade long class action on behalf of roughly 1,100 people arrested during the 2010 G20 summit in Toronto. Gillespie also teaches an environmental law externship course at the University of Toronto Faculty of Law.

Milestones & recognition

  • Eric Gillespie graduated with Distinction from the University of Western Ontario Law School in 1994 and received the Cassels Brock Practice Skills Award.
  • Gillespie was called to the Ontario bar in 1996, after articling in part with the Canadian Environmental Law Association.
  • The firm has operated under its current professional corporation structure since 2009.
  • The firm's work has included Pearson v. Inco, which the University of Toronto Faculty of Law describes as the largest certified environmental class action in Canada to date.
  • In August 2020, after a decade of proceedings, the firm was part of the team that reached a settlement worth up to $16.5 million for roughly 1,100 people arrested during the 2010 G20 summit in Toronto.
  • That case earned the firm's team an Excellence Awardee recognition in the Class Action Team of the Year category at the 2021 Canadian Law Awards.

In the community

  • Eric Gillespie teaches Clinical Legal Education: Externship, Environmental Law at the University of Toronto Faculty of Law, supervising students placed in environmental law settings as an adjunct instructor.
  • Gillespie has served as an editor of the Ontario Professional Planners Institute (OPPI) Journal.

The neighbourhood

The firm's office sits at 393 University Avenue, Suite 2000, on University Avenue in downtown Toronto, on the stretch of the avenue between Queen Street and Dundas Street. Osgoode Hall and the Toronto Courthouse at 361 University Avenue are a short walk south, putting a litigation practice within easy reach of the Superior Court of Justice and Court of Appeal where its lawyers regularly appear. Further north, past Dundas Street, University Avenue is sometimes called Hospital Row for its concentration of hospitals.

Frequently asked questions

What kinds of clients does Eric K. Gillespie Professional Corporation represent?
The firm describes its clients as ratepayer and community groups, municipalities, corporations, non-governmental organizations, First Nations, and individual clients across Ontario and Canada.
Does the firm handle environmental appeals before tribunals like the Environmental Review Tribunal?
Yes. Firm lawyers appear regularly before the Environmental Review Tribunal and other administrative law bodies in Ontario, in addition to Ontario's courts and the Supreme Court of Canada.
Has the firm worked on environmental class actions?
Yes. The firm's work has included Pearson v. Inco, which the University of Toronto Faculty of Law describes as the largest certified environmental class action in Canada to date.
Did the firm work on the G20 mass arrest class action?
Yes. The firm was part of the team behind an August 2020 settlement, reached after a decade of proceedings, in a class action on behalf of roughly 1,100 people arrested during the 2010 G20 summit in Toronto. That work was named an Excellence Awardee in the Class Action Team of the Year category at the 2021 Canadian Law Awards.
Where is the office located and how do I reach the firm?
The office is at 393 University Avenue, Suite 2000, in downtown Toronto. The firm can be reached at 416 703 4047.
How long has Eric Gillespie been practising law, and how big is the firm?
Eric Gillespie was called to the Ontario bar in 1996 and has operated Eric K. Gillespie Professional Corporation under its current structure since 2009. It is a small firm built around Gillespie's litigation practice.

Where to find them

393 University Avenue, Suite 2000, Toronto ON M5G 1E6 · 416-703-4047

Similar firms in City of Toronto

Ken Wise and Associates is a Toronto litigation firm where Ken Wise has provided legal counsel for over 40 years across family law, civil litigation, estates, and appeals. The firm represents clients before all levels…

Family LawFamily LawAdministrative & Regulatory LawAdministrative & Regulatory LawEmployment & Labour LawEmployment & Labour LawPersonal InjuryPersonal Injury

Carissa Wong

1 lawyer

Carissa Wong is a Toronto lawyer, environmental professional, and mediator with almost two decades of experience in program development and alternative dispute resolution. She is an appointed member of a community-lev…

Administrative & Regulatory LawAdministrative & Regulatory LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionIndigenous LawIndigenous Law

Ecojustice

19 lawyers · Est. 1990

Ecojustice is Canada's largest environmental law charity, providing free legal representation to citizens, environmental organizations, First Nations, and other groups on environmental cases. Founded in 1990 as the Si…

Administrative & Regulatory LawAdministrative & Regulatory LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionClass ActionsClass ActionsIndigenous LawIndigenous Law

Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗