W. H. Peter Madorin, K.C.

Mark is a Partner at Ross & McBride LLP. He is the head of the Estate and Commercial Litigation Groups. Mark's practice focuses on commercial and estate litigation. He acts for a variety of clients that include public and private companies, institutions and individuals. With over twenty years of trial and advocacy experience, Mark has handled many complex cases and has appeared in all levels of court in Ontario.

David Petras is a partner in the firm's Waterloo Region office. His practice focuses on domestic and cross-border mergers and acquisitions; debt and equity financing; licensing, distribution and strategic alliance arrangements; and electronic commerce and Internet issues. David’s clients include software developers, Internet-related companies, advanced manufacturers, computer products distributors, financial institutions, auto parts manufacturers, medical products companies and alternat...

Jonathan Dye is a partner at Filion Wakely Thorup Angeletti LLP. Recognized as one of the leading lawyers in his field, he primarily litigates and advises clients on a range of issues such as wrongful dismissals, workplace human rights, employment standards, recruitment and dismissals, employment contracts and employment issues in corporate transactions. He has appeared as lead counsel in cases before the Ontario Court of Appeal, the Ontario Superior Court of Justice and Divisional Court, the...

Rose M. Demelo Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Rose M., who practices law in Kitchener, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Rose M. is held by other top lawyers in the same geographic and legal practice area.

Sean M. Sullivan is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Insurance Law. Sean M., who practices law in Kitchener, Ontario, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sean M. is held by other top lawyers in the same geographic and legal practice area.

Bill MacGregor is a partner in the firm’s Waterloo Region office and the leader of the firm’s Immigration National Practice Group. His practice emphasizes corporate immigration and the cross-border movement of personnel. Bill also provides advice in relation to hiring and employing foreign nationals in Canada. Bill brings years of experience advising clients on all aspects of corporate immigration. He regularly assists employers with international transfers; obtaining work permits...

James Bromiley has a diverse practice encompassing all areas of civil and commercial litigation. He has acted for clients in property and casualty insurance, personal injury, motor vehicle, short and long term disability claims, and environmental law matters. James identifies sound, practical business solutions for his clients, resolving disputes through consultation and negotiation before litigation becomes the only viable option. He adopts a problem-solving approach to address client concer...

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

David graduated with Honours from Montreal’s McGill University in 1978. He next received his Juris Doctorate degree, cum laude, from Southwestern University School of Law in Los Angeles. In 1982 he was admitted by the Supreme Court of California to practice as an Attorney and Counsellor-at-Law in the courts of California. After receiving his Certificate of Qualification through the University of Ottawa Faculty of Law, in 1985 David was admitted by the Law Society of Ontario as a Barrist...

Amanda Jackson is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Amanda, who practices law in Hamilton, Ontario, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Amanda is held by other top lawyers in the same geographic and legal practice area.