Overview

This firm emerged from a line of shops that began in the early 1950s as Ferguson & Montgomery and then Cassels Mitchell Somers Dutton & Winkler. The modern firm was established in the early 1980s and currently boasts 48 lawyers. At least four judges including the former chief justice of Ontario Warren Winkler hail from the firm. Dutton Brock LLP has been involved in most major insurance matters — defence and coverage over the last 30 years. The firm focuses on achieving viable solutions to complex insurance litigation issues and includes substantial expertise representing defendants in many major class actions.

Magnifying glass with star icon
Practice Areas:
5
Person outline with Best Lawyers logo
Best Lawyers Recognized:
6

Rankings

National

Tier
2
National Ranking
Personal Injury Litigation
Tier
3
National Ranking
Insurance Law

Regional

Toronto

Tier
1
Toronto
Insurance Law
Tier
1
Toronto
Personal Injury Litigation
Tier
1
Toronto
Product Liability Law
Tier
2
Toronto
Alternative Dispute Resolution
Tier
2
Toronto
Legal Malpractice Law
Tier
3
Toronto
Professional Malpractice Law

Rankings

National

Tier
2
National Ranking
Personal Injury Litigation
Tier
3
National Ranking
Insurance Law

Regional

Toronto

Tier
1
Toronto
Insurance Law
Tier
1
Toronto
Personal Injury Litigation
Tier
1
Toronto
Product Liability Law
Tier
2
Toronto
Alternative Dispute Resolution
Tier
2
Toronto
Legal Malpractice Law
Tier
3
Toronto
Professional Malpractice Law

Practice Areas

Dutton Brock LLP has been ranked by Best Law Firms for excellence in 6 specialties, reflecting the firm's commitment to delivering outstanding legal services.
Additionally, the firm provides services in these practice areas:
  • Alternative Dispute Resolution
  • Construction Law
  • Environmental Law
  • Insurance Law
  • Personal Injury Litigation

Individuals Recognized in The Best Lawyers in Canada

Dutton Brock LLP proudly has 6 lawyers recognized for their outstanding professional performance in the 2026 edition of The Best Lawyers in Canada. This peer-reviewed honor highlights individual excellence and directly qualifies the firm for consideration in the prestigious Best Law Firms rankings. For over four decades, Best Lawyers has been the gold standard for recognizing top legal talent, serving as the cornerstone for Best Law Firms awards. Learn more about our rigorous Best Lawyers research and selection process.
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Offices & Contacts

Toronto, ON
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