Best Lawyers in Canada for Professional Malpractice Law

Brooke F. Smith is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Negligence and Professional Malpractice Law. Brooke F., who practices law in Ottawa, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brooke F. is held by other top lawyers in the same geographic and legal practice area.

With an already deep base of knowledge built over three decades in health law, Jon Rossall continues to add to his expertise. He continuously monitors evolving laws and regulations and their impact on his health care clients. Jon’s extensive experience includes all sides and perspectives of health law as a trusted advisor to both individual physicians and professional associations. His practice centers on serving health care professionals in defense of disciplinary matters and in more t...

Geoff Cowper is a leading litigator with a national reputation and has been counsel in dozens of leading cases in a wide range of areas, including commercial litigation, class actions, constitutional law, and administrative law. Geoff’s experience includes conducting trials in several jurisdictions, ranging from summary trials to cases requiring over 200 days of hearing. He has appeared in over 150 appeals, including numerous appearances before the Supreme Court of Canada, and has repre...

Richard R. Provost is a partner in the Montréal office of Langlois Lawyers. He concentrates his practice in litigation primarily in the areas of insurance law, professional and product liability, construction law and commercial law. He has acted for clients in arbitration committees and at all trial and appellate levels. He has often been called upon to act as senior counsel in several important cases in his field of expertise and built a solid reputation, whether acting for plaintiff ...

Ryan Darby's practice involves a broad range of general litigation and insurance defence matters with a particular emphasis on professional liability claims against accountants, financial planners, and design professionals, and a focus on complex, multi-party litigation. Ryan has extensive trial experience at the British Columbia Supreme Court level. He has also appeared before the British Columbia Court of Appeal and the Supreme Court of Canada. His practice includes appearances before admin...

Marie-Louise Delisle is a partner at Woods LLP, a leading Montreal litigation boutique. She has near twenty years of experience in the fields of commercial and civil litigation. She is involved in several major cases, more specifically in matters relating to securities, class actions, and professional liability, including that of accountants and stockbrokers. She is recognized as having a vast trial experience in addition to handling countless matters relating to injunctions, including Anton ...

Vikki Andrighetti is a lawyer in our Insurance Law Group. Her practice focuses on insurance law, civil litigation, and dispute resolution.

Susan Gunter, partner since 2002 at Dutton Brock LLP, holds an LLM in Civil Litigation (Osgoode), an LLB (UNB) and was called to the Ontario Bar in 1996. Susan is recognized in The Best Lawyers in Canada (Products Liability Law, Insurance Law, Personal Injury Litigation, Professional Malpractice Law and ADR) and in the Canadian Legal Lexpert Directory as Most Frequently Recommended Personal Injury - Represents Defendants . Her litigation practice in defence of domestic and international corpo...

Described by his peers as ‘the gold standard in this space, a phenomenal litigator’, for more than thirty years Jonathan has won landmark decisions across a broad variety of subject matter including competition law, constitutional law, liability of public authorities, professional liability, criminal law, financial services, franchise law and contract disputes. He has tried over 90 cases to judgment and argued over 60 appeals in provincial appellate courts and the Supreme Court of...

Jean-François Gagnon is the Chief Executive Officer of Langlois Lawyers. He is also a member of the firm’s Executive Committee and Board of Directors. His practice focuses on complex commercial litigation, corporate governance, strategy, crisis management, ethics and deontology. He has wide-ranging experience in matters involving directors’ and officers’ liability, the management of not-for-profit organizations, construction law and insurance law. Jean-François...

Martin Pichette is a partner of the Litigation group and a member of the Board of Directors of the firm. He acts primarily as a commercial and civil litigator, focusing on cases related to construction law, professional liability, damage insurance, and product liability. Before joining the firm, Mr. Pichette practised for many years with another leading law firm in the areas of commercial litigation, construction, and real estate. He has also worked as a political assistant with the Senate of...

Gavin received his Bachelor of Science degree in Biology (Zoology) from the University of Calgary. He then attended the Faculty of Law at the University of Calgary, graduating in 2001. Upon graduation, Gavin clerked at the Court of Appeal and the Court of Queen’s Bench of Alberta. Following his clerkship, Gavin completed his articles at the Calgary offices of a large national law firm, practicing in securities and regulatory matters. He was called to the Alberta Bar in 2002. Gavin joine...