Mark M. O'Donnell
About Mark M. O'Donnell
Mark M. O'Donnell is a lawyer based in Toronto, ON and has been recognized in The Best Lawyers in Canada™ since 2010. Mark M. O'Donnell is recognized in the following practice area:
- Toronto, Ontario
- Insurance Law
Current Firm: O'Donnell, Robertson & Partners
Location: Toronto, 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
Luigi Valente has a broad business law practice with a focus on corporate law, mergers and acquisitions, and securities law. He has acted for clients in connection with various matters, including mergers and acquisitions, corporate reorganizations, securities regulatory compliance filings and corporate governance. Luigi has represented both issuers and investment dealers in connection with private placements and public offerings of securities.
Laura provides passionate and dedicated representation for clients who find themselves faced with death, financial vulnerability, or capacity concerns. Laura first became interested in estates law while clerking at the Ontario Superior Court in Toronto, where she worked on a variety of estates matters, from routine probate applications to more complex disputes. Since her call to the bar in 2015, Laura has practiced exclusively in the area of estates, trusts and capacity litigation, and has re...
Karen Vigmond is a Barrie, Ontario lawyer who has deep roots in the community she serves. Born and raised in Barrie, she is proud to practise law close to home as a partner at Oatley Vigmond LLP, a firm recognized for its work in personal injury litigation across Ontario. Karen joined Oatley Vigmond LLP in 2013 as an associate and has continued to build a respected practice serving clients throughout Simcoe County and beyond. Karen earned her Bachelor of Arts from Queen’s University and...
Renowned for his ability to develop innovative strategies that solve complex labour relations problems, Brett has appeared as counsel for employers in hundreds of administrative and court proceedings at both the federal and provincial level. He frequently represents employers in collective bargaining negotiations and provides strategic advice on managing a wide variety of labour relations issues. Certified as a Specialist in Labour Law since 1998, Brett is widely recognized as one of the coun...
Megan Savard is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Criminal Defence. Megan, 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 Megan is held by other top lawyers in the same geographic and legal practice area.
Nationally known for his expertise in real estate property matters, Brett Tkatch numbers Canada’s top commercial and residential development companies and commercial institutional lenders among his clients. He is a partner in Blaney McMurtry LLP, practising in the firm's real estate group and is the Head of the Real Estate Practice Group. "I take great pride in knowing some of the people looking at my biography no doubt have visited some of the major development sites I have had the opp...
Experienced in all aspects of family law, Aaron’s clients trust him to recognize the unique complexities of their case and to provide practical solutions that work best for them not only now – but into the future. With extensive legal knowledge and a strategic mindset, he is equally effective at reaching creative, amicable resolutions through negotiation or mediation as he is advocating for his clients in court. As a partner at Epstein Cole, Aaron’s practice encompasses all ...
Michael Fenrick is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Appellate Practice, Corporate and Commercial Litigation and Labour and Employment Law. Michael, 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 Michael is held by other top lawyers in the same geographic and legal practice area.
Alf earned his JD from the U of T in 1970. He and Morris Singer founded the firm in 1974. He has appeared at all court levels including the Supreme Court of Canada, where he appeared on behalf of the successful plaintiff in the landmark decision of Oldfield v. Transamerica Insurance. Alf has achieved some of Canada’s largest jury awards for punitive damages against an insurer. He acted for the plaintiff in the milestone case of Kamin v. Kawartha Dairy, which reduced the onus on plaintif...
Linda Fuerst is one of Canada’s leading securities and commercial litigators. Her litigation practice covers a broad range of commercial and professional liability matters, with a particular focus on securities litigation, class proceedings and regulatory issues. She has litigated civil, criminal and regulatory matters and has appeared before all levels of court in Ontario, the Supreme Court of British Columbia, the Supreme Court of Nova Scotia and the Nova Scotia Court of Appeal, and r...
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
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.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
New Texas Family Laws Transform Navigating Divorce, Custody
by Bryan Driscoll
Reforms are sweeping, philosophically distinct and designed to change the way families operate.
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.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
The 2026 Best Lawyers Awards in Chile, Colombia and Puerto Rico
by Jamilla Tabbara
The region’s most highly regarded lawyers.
Can You File Bankruptcy on Credit Cards
by Bryan Driscoll
Understanding your options for relief from overwhelming debt.