Maureen is the firm's national Co-Chair and a member of the firm’s Partnership Board.
Maureen practices out of both our Vancouver and Calgary offices, and is the former Managing Partner of Osler's Calgary office (2011-17). She is a trusted advisor to major commercial clients and regularly advises both public and private sector interests. Maureen’s litigation practice is devoted to complex commercial disputes with particular emphasis on the resource industry. She is a seasoned trial and appeal lawyer with extensive experience in commercial arbitrations (domestic and international) and other forms of dispute resolution. Maureen represents a diverse group of clients and has broad experience in resource industry disputes acting on major pipeline, hydroelectric, oil sands, midstream, upstream and downstream disputes. A significant portion of Maureen’s practice involves litigation related to major resource and transportation projects and undertakings. She routinely appears on matters of judicial review, regulatory appeal, and environmental, administrative, constitutional, Charter and indigenous claims in Federal and Provincial Courts across the country.
Numerous industry publications describe Maureen as being widely regarded by clients and peers as one of Canada’s top litigators in the areas of energy & resource, indigenous, and commercial litigation, appellate advocacy, and constitutional and administrative law:
Benchmark Litigation notes that Maureen is described as: “a real force in the litigation community, taking charge and really appearing front and centre on big actions …” "She is very collaborative and really knows her stuff. She is very good at getting things under control."
Chambers and Partners notes: “…a very capable litigator … does a good job of moving matters forward.”
DEALS & CASES
INDUSTRY RECOGNITION
- Chambers Canada: Canada’s Leading Business Lawyers: Recognized in Litigation: General Commercial (Alberta)
- “…a very capable litigator … does a good job of moving matters forward.”
- The Canadian Legal Lexpert Directory: Recognized in Indigenous Law; Litigation - Corporate Commercial; Energy (Oil & Gas)
- The Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada: Recognized in Corporate Commercial Litigation
- Best Lawyers in Canada: Recognized in Aboriginal Law; Administrative and Public Law; Alternative Dispute Resolution; Appellate Practice; Bet-the-Company Litigation; Corporate and Commercial Litigation; Energy Law; Oil & Gas Law; "Lawyer of the Year", Corporate and Commercial Litigation (2021); "Lawyer of the Year", Appellate Practice (2022)
- Legal 500: Recognized in Dispute Resolution; Aboriginal Law
- Who's Who Legal: Recognized in Who’s Who Legal Canada
- Benchmark Litigation Canada: Recognized as 2021 Energy/Resource Lawyer of the Year
- Benchmark Litigation Canada: Recognized in Aboriginal, Commercial; Dispute Resolution; Energy (Litigation Star); Recognized in "Top 50 Women in Litigation" in Canada; 2020 Litigator of the Year: Energy/Resource Litigation - Canada
- Acritas Stars: Recognized as a Star Lawyer
- Women in Law: Under Maureen’s Leadership, the Osler Calgary Office was the first recipient of the Women in Law Leadership – Law Firm Award as the Alberta Firm that “best demonstrates leadership in fostering an inclusive environment for female lawyers;” Awarded Women in Law Leadership Award
- Province of Alberta: Named Queen’s Counsel, Province of Alberta
Contact info:
mkilloran@osler.com
tel: 403.260.7003