About Cavanagh LLP

Cavanagh LLP is a small civil litigation firm in Ottawa, with six lawyers practicing from an office on Roosevelt Avenue in the city's Westboro neighbourhood. The firm was previously known as Cavanagh Williams Conway Baxter LLP. Two of its named partners, Thomas Conway and Colin Baxter, left in 2014 to start their own firm, and Heather J. Williams, a co-founder and partner from 2002, stayed with the firm until being appointed to the Ontario Superior Court of Justice in 2017. Founding lawyer Stephen Cavanagh was called to the Ontario bar in 1980 and continues to practice at the firm, focusing on professional liability, insurance coverage, and commercial litigation.

The firm concentrates on five areas: commercial litigation, including restructuring and insolvency, insurance and tort, professional liability, mediation and arbitration, and employment law. It runs a small firm model built around cost management, using techniques such as critical path planning and task-based billing to keep client costs predictable. Every lawyer at the firm volunteers at the Pro Bono Law Ontario clinic at the Ottawa courthouse, and Cavanagh pairs each articling student with a mentor as part of its student program.

In the community

  • Stephen Cavanagh has taught Insurance Law and Trial Advocacy at the University of Ottawa's Faculty of Law and spent five years as an instructor in the Law Society's bar admission course for civil litigation.
  • Stephen Cavanagh has served on Ottawa's Bench and Bar Committee since 2022.
  • Every lawyer at Cavanagh LLP volunteers at the Pro Bono Law Ontario clinic at the Ottawa courthouse, and lawyers at the firm sit on the boards of the Advocates' Society and Pro Bono Law Ontario.
  • A lawyer at the firm co-chairs the County of Carleton Law Association's education committee and has helped plan its annual civil litigation conference.

Good to know

A person using a wheelchairWheelchair accessibleA calendar with a checkmark beside a clockBy appointment

This firm’s lawyers at a glance

Called to the bar
1980–2020 · median 11 years in practice 5 of 6 lawyers
Law schools
University of Ottawa (2), Queen's University, University of Windsor, Western University 5 of 6 lawyers
Languages on the roster
English, French

Where to find them

400-411 Roosevelt Avenue, Ottawa, ON K2A 3X9 · 613-569-8558

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This listing was generated by AI from public sources in September 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗

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