About Thornton Grout Finnigan LLP

Thornton Grout Finnigan LLP (TGF) is a Toronto law firm with a narrow focus: commercial litigation and restructuring and insolvency law. It doesn't take on a general caseload. Instead its lawyers concentrate on complex disputes and corporate insolvencies for financial institutions, regulatory agencies, publicly traded companies, and the receivers and monitors that courts appoint to oversee troubled companies. The firm operates from a single office in the Toronto-Dominion Centre, in the heart of the city's financial district, with a team of lawyers and law clerks working across both practice areas.

TGF's lawyers have acted in some of the largest insolvency and restructuring matters in Canadian history. The firm acted for the UK Pension Claimants, the largest single creditor in the worldwide Nortel Networks estate, in a case that produced a cross border pro rata allocation of US$7.3 billion. It has also acted for the court appointed receiver of Bridging Finance, for creditors in the Air Canada restructuring, for the court appointed monitor Ernst & Young in the restructuring of Stelco, and in the wind down of Blockbuster Canada's store network. Robert I. Thornton and John L. Finnigan continue to practise at the firm.

Milestones & recognition

  • The firm chose to concentrate exclusively on commercial litigation and restructuring and insolvency work rather than practise more broadly.
  • TGF acted for the UK Pension Claimants, the largest single creditor in the worldwide Nortel Networks estate, in a case that produced a pro rata allocation of US$7.3 billion across several jurisdictions.
  • The firm acted for PricewaterhouseCoopers as court appointed receiver of Bridging Finance, an alternative lender that had raised about $2 billion from more than 26,000 investors.
  • TGF represented the court appointed monitor Ernst & Young in the CCAA restructuring of Stelco and creditors in the cross border restructuring of Air Canada, and it handled the insolvency wind down of about 440 Blockbuster Canada stores.
  • Nine TGF partners are listed in the 2026 Canadian Legal Lexpert Directory, and twelve of the firm's lawyers are recognized in Benchmark Litigation Canada's 2026 guide.
  • Three TGF partners are recognized in Benchmark Canada's Top 100 Women in Litigation Guide for 2026.
  • Robert I. Thornton and John L. Finnigan continue to practise at the firm.

In the community

  • TGF lawyers volunteer through Pro Bono Ontario, an organization that connects lawyers with low income Ontarians who need legal help.
  • Firm lawyers sit on the boards of Worldwide Orphans Foundation Canada and Canada's Great Kitchen Party Toronto.
  • The firm takes part in the Sporting Life 10K in support of Camp Oochigeas, a camp for children affected by childhood cancer, and in the Daily Bread Food Bank's Law Firm Holiday Challenge.
  • Since 2015, TGF has designated the Maryse and William Brock Chair, which supports stem cell transplant research, as its chosen charity.
  • TGF lawyers teach as instructors in the law faculties of three Ontario law schools.

Good to know

A person using a wheelchairWheelchair accessible

This firm’s lawyers at a glance

Called to the bar
1969–2025 · median 7 years in practice 23 of 33 lawyers
Law schools
Osgoode Hall Law School (4), University of Toronto (3), University of Windsor (2), Western University (2), Georgetown University Law Center, Osgoode and 3 more 16 of 33 lawyers

The neighbourhood

TGF's office is in the tower at 100 Wellington Street West, part of the Toronto-Dominion Centre complex in the heart of Toronto's financial district. The complex has been designated under the Ontario Heritage Act since 2003, and about 21,000 people work there, making it the largest commercial office complex in Canada. It's a fitting address for a firm whose clients are mostly banks, regulators, and other financial institutions.

Frequently asked questions

What areas of law does Thornton Grout Finnigan handle?
TGF practises in exactly two areas: commercial litigation and restructuring and insolvency law. It doesn't offer services outside those two areas.
Does TGF work with individual clients, or only companies?
TGF's clients are mostly financial institutions, regulatory agencies, publicly traded companies, and the receivers and monitors that courts appoint in insolvency proceedings. It's set up for complex commercial and institutional matters rather than personal legal needs.
How long has TGF been practising in Toronto?
TGF has long operated from Toronto's financial district, focused exclusively on commercial litigation and restructuring and insolvency law.
Has TGF worked on any major Canadian insolvency cases?
Yes. TGF acted for the UK Pension Claimants, the largest single creditor in the worldwide Nortel Networks estate, and it has acted in the Bridging Finance receivership and the Stelco and Air Canada restructurings, among other matters.
Where is Thornton Grout Finnigan's office located?
The office is at Suite 3200, 100 Wellington Street West, in the Toronto-Dominion Centre in Toronto's financial district. It can be reached at 416.304.1616 or info@tgf.ca.
Are TGF's lawyers recognized in legal directories?
Yes. Nine TGF partners are listed in the 2026 Canadian Legal Lexpert Directory, and a number of the firm's lawyers are recognized in Benchmark Litigation Canada's 2026 guide.

Where to find them

Suite 3200, 100 Wellington Street West, P.O. Box 329, Toronto-Dominion Centre, Toronto, Ontario M5K 1K7 · 416-304-1616

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