Guy Pinsonnault
About Guy Pinsonnault
Guy Pinsonnault is a lawyer based in Ottawa, ON and has been recognized in The Best Lawyers in Canada™ since 2015. Guy Pinsonnault is recognized in the following practice areas:
- Ottawa, Ontario
- Competition / Antitrust Law
- Criminal Defence
Current Firm: McMillan LLP
Location: Ottawa, ON
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Erin Page is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Negligence. Erin, who practices law in Ottawa, Ontario, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Erin is held by other top lawyers in the same geographic and legal practice area.
Najma joined Yegendorf Rashid in 1999 and became a partner of the law firm in 2009. Her practice is devoted exclusively to personal injury litigation and she is well versed in Ontario’s Insurance Act and its Regulations, including the Statutory Accident Benefits Schedule. Najma has represented seriously injured clients in the Ontario Superior Court of Justice, as well as in dispute resolution proceedings before the Financial Services Commission of Ontario. Najma has developed an experti...
Jay Kerr-Wilson leads Fasken’s Copyright Group and is a recognized authority in communications and public law, with a particular focus on copyright. He advises Canadian and international clients in the communications and technology sectors on a wide range of regulatory and legal matters, including telecommunications and broadcasting regulation, copyright licensing and liability, and trademark protection. Jay regularly represents clients before the Copyright Board of Canada and in appell...
Linden Dales is a top attorney recognized by Best Lawyers in the practice area(s) of International Trade and Finance Law and Public Procurement Law. Linden, who practices law in Ottawa, Ontario, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Linden is held by other top lawyers in the same geographic and legal practice area.
Marcia Mills is a partner, co-founder and co-lead of Fasken’s National Security Group, and a member of the firm's Government Relations and Political Law teams. Her practice focuses on procurement and government contracts, national security, national and international trade agreements, and the federal Defence Production Act and Access to Information Act . For almost 30 years, Marcia has worked in both the public and private sectors as external and in-house counsel in defence, aerospace, ...
Geoffrey first joined Brazeau Seller Law as an Associate in 2017. During Geoffrey’s tenure as a lawyer with Brazeau Seller Law, he has become an important member of our firm and an integral part of our litigation department, developing a broad civil litigation practice that includes construction, corporate, commercial, real estate, bankruptcy and insolvency, sports and insurance litigation. Geoffrey attended Queen’s University, where he received a Bachelor of Arts in Economics and...
J.D. Sharp is a top attorney recognized by Best Lawyers in the practice area(s) of Labour and Employment Law. J.D., 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 J.D. is held by other top lawyers in the same geographic and legal practice area.
Stephanie Pearce is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Health Care Law and Public Procurement Law. Stephanie, 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 Stephanie is held by other top lawyers in the same geographic and legal practice area.
Robert Sheahan is a partner in Gowling WLG's Ottawa office. Robb's practice focuses primarily on health law and medical defence, including acting as counsel to the Canadian Medical Protective Association (CMPA) and to physicians in the context of professional discipline matters and professional negligence. Robb has appeared before the Ontario Provincial Court, Superior Court of Justice, Court of Appeal, as well as various administrative boards and tribunals, such as health professions boards ...
Larry concentrates on international trade and international business transactions. He has acted for private sector clients, governments and international agencies, dealing particularly with the GATT/WTO, FTA and NAFTA and appears as counsel before dispute-resolution bodies under the NAFTA, as well as before the Canadian International Trade Tribunal, the courts and Parliamentary committees. He was a member of the Market Access Advisory Group (MAAG) of the Canadian Foreign Affairs and Internati...
Explore and Learn
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
How Far Back Can the IRS Audit You?
by Bryan Driscoll
Clear answers on IRS statutes of limitations, recordkeeping and what to do if you are under review.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
The Best Lawyers in France 2027: Peer-Reviewed Excellence
by Jamilla Tabbara
Seventeen editions of peer trust, a growing profession and a dynamic legal market.
Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland
by Jamilla Tabbara
Celebrating the legal professionals throughout Central Europe.
The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement
by Grace Greer
A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.
How AI Is Changing the Way Clients Find Lawyers
by Jamilla Tabbara
Best Lawyers CEO Phil Greer explains how AI-driven search tools are reshaping legal marketing and why credibility markers matter.
When Is It Too Late to Stop Foreclosure?
by Bryan Driscoll
Understanding the foreclosure timeline, critical deadlines and the legal options that may still protect your home.
Can You Go to Jail at an Arraignment?
by Bryan Driscoll
Understanding What Happens at Your First Court Appearance.