John W. Groenewegen

Katherine Kay is a partner in the Litigation & Dispute Resolution and Competition & Foreign Investment Groups. She has served on the firm’s Partnership Board and Executive Committee, and is on her third tour of duty on the Management Committee in the Toronto office. Katherine’s litigation practice is concentrated on complex commercial litigation, often involving the interplay between regulatory, civil and criminal law regimes, and across multiple jurisdictions (within Cana...

Executive Summary Paul Stoyan is the Chairman of Gardiner Roberts and practises business law with a special emphasis on mergers and acquisitions, corporate finance and corporate governance. His varied experience makes him a valued corporate counsel to large and medium-size corporations of all types. He has worked extensively with various companies in the technology and financial sectors and has assisted such companies in various cross-border transactions, in going public and in establishing a...

Kate Cahill is a personal injury lawyer, whose focus is primarily on medical malpractice cases, including claims arising from obstetrical negligence, surgical negligence, nursing negligence, emergency room negligence, medication errors, missed diagnoses and delayed diagnoses. Kate’s medical litigation practice extends to representing people who have suffered injury as a result of defective medical devices or surgical implants. Kate’s personal injury litigation practice also involv...

Abbey Sinclair is a Partner in the Municipal, Development and Land Use Planning Practice Group at WeirFoulds. Her practice focuses on expropriation and municipal law. Abbey provides practical and strategic advice to municipalities and public authorities on various land, expropriation, and infrastructure related issues. She also represents landowners throughout Ontario in a wide range of expropriation and real property litigation matters. She regularly appears before the Ontario Superior Court...

A partner at the firm since 1999, Kelly Gill is best known for his intellectual property litigation practice, particularly in the areas of trademarks and unfair competition. Kelly is leader of the firm’s Trademarks Group and interim leader of the Intellectual Property Litigation Group. Kelly is ranked as a leading IP lawyer by some of the world’s foremost legal directories, such as the Canadian Legal Lexpert Directory , Who’s Who Legal , Chambers Global and the Best Lawyers ...

David is a partner of INQ Law and concentrates his practice on privacy, data protection, access to information and data governance. With more than 30 years of experience, David was a senior information and privacy regulator and has deep expertise in the application and enforcement of privacy and access laws. Over his career, David has held the roles of assistant commissioner, director of legal services, and manager of adjudication with Ontario’s Information and Privacy Commissioner. He ...

Matt has a distinguished track record of success in complex, high-stakes disputes across multiple disciplines, including corporate and commercial litigation, insolvency litigation, fraud, and securities litigation. He has extensive experience in some of the most significant insolvency disputes in North America. Matt combines subject-matter expertise with creativity and ensures his litigation strategy aligns seamlessly with his clients’ long-term goals. Matt is highly regarded by clients...

Sara Mainville has been a member of the Ontario bar (2005) and she is a member of the BC bar (2022) with specific matter approvals to practice in Nunavut and Quebec. Sara has a Management/Public Administration degree (Lethbridge) and a Bachelor of Laws from Queen’s University. She has a LLM from the University of Toronto and an Advanced Negotiations certificate from Harvard University, and a Certificate in Entertainment Law (Osgoode PD). During her early practice years with a well-known...

Tony is a Partner and Co-Leader of the firm’s Competition, Marketing and Foreign Investment Group. As former counsel to Canada’s Commissioner of Competition (Department of Justice Canada) and having served as counsel in many of Canada’s most significant competition matters, Tony is widely recognized as one of Canada’s leading practitioners in competition law and litigation. Tony represents and counsels clients in domestic and multi-jurisdictional competition matters, i...

With over a decade of experience and a proven track record of success, Erin Ellis is an advocate for survivors of both recent and historical sexual and physical abuse. Erin received her Bachelor of Science degree from Cornell University (2003) and her law degree from Queen’s University (2007). She was called to the Ontario Bar in 2008. Erin represents plaintiffs from across Canada, demanding acknowledgment and compensation for the harms perpetrated or facilitated by individuals and inst...