Alexander Bissonnette

Lawyer and Practice Lead, Commercial Litigation

About Alexander

Phone

Main line: (613) 722-1500

Direct line: (613) 369-0358

Nelly | Law Clerk: (343) 700-0241

Email & Fax

Fax: (613) 722-7677

I am an Associate at Mann Lawyers and the Lead of the Firm’s Commercial Litigation Practice.

My practice is dedicated exclusively to litigation, with a particular emphasis on commercial disputes. I have experience handling a broad range of litigation matters, including contractual disputes, collections (including enforcement), franchise disputes, shareholder and oppression matters, property and real estate disputes, and procurement disputes. I also have experience representing parties involved in insolvency matters, including receiverships and CCAA proceedings.

In addition to my commercial litigation practice, I am a member of the firm’s Estate Litigation Group, where I handle disputes involving estates as well as power of attorney and guardianship matters.

I articled with Mann Lawyers and was called to the Bar in 2017. I earned my law degree from Queen’s University in 2016, where I was actively involved with Queen’s Legal Aid, assisting students and Kingston residents with a variety of legal issues. Prior to law school, I graduated from the University of Ottawa with a Bachelor of Social Sciences in Political Science and Public Administration.

Outside of the office, I enjoy travelling and trivia, and I am an avid football fan and enjoy watching a wide range of sports.

If I can be of assistance, please do not hesitate to contact me.

Alexander's Service Areas

Commercial Litigation
Experienced representation in complex business disputes, including contract claims, debt collection, shareholder and partnership conflicts, and other commercial litigation matters.
Construction Law
Legal advice and dispute resolution for construction projects, including contracts, liens, delays, defects, procurement issues, and project risk management.
Estate Litigation
Resolving disputes involving wills, trusts, estates, powers of attorney, and capacity issues through negotiation and mediation.

The Latest From Alexander

Blog |
Commercial Litigation
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Posted May 4, 2026

The 2025 Ontario Court of Appeal decision of Correa v. Valstar Homes (Oakville Sixth Line) Inc. (2025 ONCA 156), demonstrates that “time is of the[...]
Blog |
Commercial Litigation
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Posted March 18, 2026

Rectification is a long-standing recognized equitable remedy that the Court may grant as a means of correcting errors in the recording of terms in written[...]
Blog |
Commercial Litigation
By: 

Posted January 20, 2026

The 2025 Ontario Court of Appeal decision of Gallant v Johnson (2025 ONCA 419) demonstrates the limitations of the Court to fix for the parties[...]
Blog |
Commercial Litigation
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Posted February 25, 2025

The 2024 decision of the Ontario Court of Appeal in Preiano v. Cirillo (2024 ONCA 206) provides valuable insight into the quantification of damages that[...]
Blog |
Commercial Litigation
By: 

Posted August 29, 2023

Specific performance refers to the Court-ordered remedy that the parties must proceed with completing a real estate transaction. The recent Court of Appeal decision of[...]
Blog |
Commercial Litigation
By: 

Posted August 17, 2021

The recent Superior Court decision of Leis v Lee (2021 ONSC 3683), which involved dueling oppression applications by two shareholders, provides guidance as to how[...]