Katrina Warren

Biography John Pirie leads the Firm's Litigation and Government Enforcement Group in Canada. He acts for clients in complex business disputes and white collar matters. John is widely recognized as a leading trial, arbitration and appellate lawyer. He is certified by the Law Society of Ontario as a Specialist in Civil Litigation, and ranked by Chambers as a leading individual in both the Corporate Litigation and White Collar categories. Clients interviewed by Chambers have said: "John Pirie ha...

Barry Landy is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation. Barry, who practices law in Montréal, Quebec, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Barry is held by other top lawyers in the same geographic and legal practice area.

Mark Stacey is a Partner and Co-Chair of Singleton Urquhart Reynolds Vogel LLP’s Commercial Business Litigation practice group. He is a member of the firm’s Management Committee. He offers timely, result oriented advice to clients, helping them to make critical decisions about litigation matters or key transactions relating to their businesses. Mark’s practice is primarily directed towards advising clients about diverse commercial problems and transactions. He has acted for ...

René-Martin Langlois is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. René-Martin, who practices law in Québec, Quebec, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which René-Martin is held by other top lawyers in the same geographic and legal practice area.

Lucy L'Hirondelle is a litigator whose practice encompasses a broad range of commercial litigation matters and international arbitration with an emphasis on oil and gas litigation/arbitration, contractual disputes, management-side employment litigation. She also has experience conducting third-party investigations. Lucy has worked in the Calgary litigation group since 2012 and has appeared before all levels of court in Alberta, the Nova Scotia Supreme Court, and is familiar with Federal Court...

Abbas Sabur is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Corporate and Commercial Litigation, Director and Officer Liability Practice and Securities Law. Abbas, who practices law in Vancouver, British Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Abbas is held by other top lawyers in the same geographic and legal practice area.

Bill practices corporate commercial, construction and energy law, with an emphasis on public-private partnerships and construction contracts. His expertise includes: Public-private partnerships Rail and light rail projects Commercial, residential and mixed-use development projects Power plant and industrial EPC contracts Procurement documents and agreements to design, build and construct any asset Mergers and acquisitions Bill completed his articles with BLG. Before law school, he worked for ...

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...

Wayne Fedun has practised oil and gas law in Canada and internationally since 1992. He has negotiated and prepared a variety of energy industry agreements, including joint venture agreements, project development agreements, project finance agreements, facility agreements, engineering, procurement and construction agreements, transportation agreements, marketing agreements, Canadian East Coast off-shore agreements and various South American and Central Asian agreements. These agreements relate...

Brian joined Zarek Taylor Grossman Hanrahan LLP in 2009 and was admitted into the partnership in 2015. He is a co-chair of the Special Investigations practice group. Brian graduated with distinction from the University of Toronto in 2002 with an Honours Bachelor of Science in Human Biology. He completed his law degree at the University of Western Ontario in 2005 and was called to the Bar in 2006. Brian's primary practice encompasses all areas of automobile insurance defence litigation includi...