Mark Veneziano holds a partnership position at Lenczner Slaght, where his legal expertise spans a diverse range of fields including commercial disputes, professional accountability, conflicts among shareholders, insurance matters, securities, and issues related to construction and property. His clientele is just as varied, including corporate entities, medical professionals, brokers, and financial institutions.

Mark is committed to offering actionable, straightforward advice to help his clients settle disputes with efficiency. Yet, he stands ready to advocate fiercely on their behalf in court if necessary. With extensive experience in the courtroom, Mark has led numerous trials across different domains such as commerce, finance, and medical malpractice, demonstrating his prowess as a trial attorney. He is also well-versed in leading commercial arbitration processes. Mark's familiarity with professional regulations is notable, making regular appearances before the College of Physicians and Surgeons of Ontario and similar bodies.

His practice at Lenczner Slaght covers Class Actions, Commercial Litigation, Construction, Employment, Insurance, Professional Liability and Regulation, and Securities Litigation. Mark was admitted to the bar in Ontario in 1998 after completing his LLB at Osgoode Hall Law School in 1996.