James G. "Jim" Rumball

Peter Flynn is a partner in the Competition & Foreign Investment Group. His practice focuses on the review of transactions under the Competition Act and the Investment Canada Act , with a particular emphasis on obtaining required regulatory approvals for cross-border mandates. Under the Competition Act , Peter advises on all aspects of competition law, including complex merger review, joint ventures and strategic alliances, criminal and civil investigations, regulatory compliance matters ...

Joanna Vince, B.Sc. (Hons.), J.D., is a Partner and Certified Specialist in Environmental Law by the Law Society of Ontario at Willms & Shier Environmental Lawyers LLP. Joanna has significant expertise assisting clients with environmental approvals and permits for developments and industry. Joanna advises industry, conservation authorities, governments and crown corporations, Inuit groups, tribunals and land claims organizations on environmental law matters. Joanna helps clients navigate ...

Michael Cooper is a partner at Whelton Hiutin. His commercial litigation practice focuses on construction, real estate and leasing, shareholder disputes and employment law. In the areas of construction and real estate litigation, Michael has represented a number of large land developers and contractors in complex disputes. He has appeared before all levels of court in Ontario, representing clients at trials, applications and motions. He has also appeared before a number of administrative trib...

Eric Reither’s practice focuses on corporate and securities law, with a particular emphasis on mergers and acquisitions and on covered bond transactions. He has acted for domestic and international clients on a wide range of acquisitions, divestitures, take-over bids, mergers, strategic alliances, joint ventures, shareholder and partnership arrangements and corporate reorganizations. Mr. Reither has also advised issuers and underwriters in connection with the establishment and registrat...

Jay Lefton practices corporate and securities law. Jay advises clients on public and private mergers & acquisitions transactions, private equity matters and public and private financings, as well as assisting with strategic alliances, technology transfer and licensing. He works predominantly in the technology and life sciences sector. Assisting acquirers and target companies and their boards of directors, Jay advises on negotiated transactions and unsolicited takeover bids, most of which ...

Patrick Duffy is a partner and Co-Head of the Projects & Infrastructure Group. His practice focuses on project development that includes municipal and planning law, environmental permitting and litigation, energy regulation, and Indigenous engagement. He is highly sought after for his considerable experience with environmental assessments and other regulatory approvals in a variety of sectors, including renewable and non-renewable electricity generation, electricity transmission, mining, ...

John Monger is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law and Labour and Employment Law. John, 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 John is held by other top lawyers in the same geographic and legal practice area.

Rachel Goldman Robinson is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Rachel, who practices law in Toronto, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Rachel is held by other top lawyers in the same geographic and legal practice area.

Paul Morrison is a partner in our litigation group. He has a national reputation as one of Canada’s leading counsel in complex corporate and commercial litigation, including class action litigation, securities litigation, competition litigation, insolvency litigation, professional liability, products liability and domestic and international arbitration. Paul regularly acts on behalf of leading companies and institutions, both foreign and domestic, and has appeared at all levels of trial...

Boris Muchalov’s corporate-commercial practice covers a broad range of transactions with an emphasis on bilateral and syndicated secured debt financings, asset-based lending, factoring, automotive floor plans, and acquisition and construction financings. He works on both domestic and cross-border transactions across a wide range of industries. Boris’ clients include financial institutions, asset-based lenders, and corporate borrowers. He also acts as corporate counsel to a number ...