Best Lawyers in Canada for Professional Malpractice Law

Ariane Légère-Bordeleau is a top attorney recognized by Best Lawyers in the practice area(s) of Professional Malpractice Law. Ariane, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ariane is held by other top lawyers in the same geographic and legal practice area.

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...

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 ...

Beth Allard is experienced counsel in various commercial disputes involving complex contractual, tortious and regulatory legal issues, providing both litigation advice and negotiating successful and strategic resolutions. She regularly advises and assists clients on matters relating to tendering, procurement, project delivery and management, liens and dispute resolution. Ms. Allard's practice also covers a range of liability defence work for design professionals, financial professionals, dire...

As a shareholder and senior lawyer at Foster & Company, my broad-based litigation practice includes insurance defense, commercial litigation, complex multi-party actions, product liability, medical and professional malpractice and personal injury cases throughout the Maritimes. I have appeared at all levels of Court in New Brunswick as well as a number of administrative tribunals. After graduating from the University of New Brunswick with my Bachelor of Arts (1992) and Bachelor of Laws (1...

Jodi Murray is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law, Medical Negligence and Professional Malpractice Law. Jodi, 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 Jodi is held by other top lawyers in the same geographic and legal practice area.

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 55 appeals in provincial appellate courts and the Supreme Court of...

Claudia Déry is the Canadian co-head of our construction and engineering team. She has advised and represented before the courts a number of clients in construction-related matters, including major public-private partnership projects. She has experience in drafting tender documents and construction law topics and conducts the annual review of construction case law for the Canadian Bar Association. She has been ranked in the Best Lawyers in Canada since 2006 in the area of construction ...

Adriana I. Cargnello is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Professional Malpractice Law. Adriana I., who practices law in Ottawa, Ontario, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Adriana I. is held by other top lawyers in the same geographic and legal practice area.

Shantona co-founded Pape Chaudhury in 2018. She represents both individual and institutional clients in civil and commercial disputes. Her practice includes commercial litigation, class actions, torts, professional discipline, professional negligence, administrative, constitutional, and public international law. Shantona has considerable expertise in appeals: she has been counsel in over 30 cases at the Ontario Court of Appeal and has successfully argued at the Supreme Court of Canada. She al...

Nadia Marotta is a top attorney recognized by Best Lawyers in the practice area(s) of Director and Officer Liability Practice, Health Care Law, Insurance Law and Professional Malpractice Law. Nadia, who practices law in Toronto, Ontario, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nadia is held by other top lawyers in the same geographic and legal practice area.

Tim Ryan is a partner in Gowling WLG's Calgary office. He practises actively in the area of health law, professional regulation and professional liability. Tim's practice includes class action proceedings, administrative law and the defence of medical, pharmacist and engineering malpractice cases. He also has an interest in public and private international law matters. While at Cambridge, Tim concentrated his studies in public and private international law, including studies at the Lauterpach...