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Mark van Zandvoort

Partner Admitted to the Ontario Bar: 2010

Mark is a dedicated advisor who ensures that conflicts are dealt with effectively and economically for his clients and their businesses. He is a tireless advocate who will do what it takes to deliver the best possible solutions. Whether through settlement negotiations, mediation, arbitration or litigation, he guides his clients along a path that is most likely to bring finality to a dispute.

Mark is a member of the firm's Litigation Group, practising corporate and commercial litigation with an emphasis on litigating contractual disputes, shareholder and employment disputes, oppression remedy claims, fraud, residential and commercial tenancy disputes, negligence claims, applications for urgent injunctive relief, and conflicts arising in insolvency proceedings. Mark’s clients include financial institutions, individuals and small and large businesses across a wide array of industries.

As part of his litigation practice, Mark regularly attends to argue motions before the Ontario Superior Court of Justice, including at the Commercial List Court. He has conducted trials at the Ontario Superior Court of Justice, appellate experience at the Ontario Court of Appeal, and has prepared leave to appeal applications to the Supreme Court of Canada. Mark is a regular participant in private and court-mandated mediations, and also has experience successfully resolving disputes through private arbitration.

Over the years, Mark has developed a niche for seeking and obtaining urgent injunctive relief from the Ontario Superior Court of Justice on behalf of his clients. This can include enforcing the terms of an existing contractual arrangement, to prevent a cessation of services by the defendant which would cause irreparable harm to a client’s business, or freezing the assets and accounts of defendants who are alleged to have been the beneficiaries of misappropriated funds. He has also served as part of a team of lawyers that fulfilled the mandate of the Independent Supervising Solicitor with respect to the execution of an Anton Pillar Order.

Mark serves as a firm-appointed mentor to summer and articling students who aspire to practise in the area of civil litigation, as well as to associate lawyers in the firm’s Litigation Group. Mark is also a member of the firm’s Student Recruitment Committee.

Professional Involvement

Special Designations

  • Fraser Milner Casgrain LLP Prize, Property I – University of Ottawa Faculty of Law, 2007
  • Chancellor's Prize in Social Science Bachelor Program (Gold Medalist in the Three Year Social Science Bachelor Program), University of Western Ontario, 2006


  • The Advocates' Society
  • The Canadian Bar Association

Community Involvement

  • Aird & Berlis LLP United Way Campaign Committee (2015)
  • Lawyer Participant, National Expert Witness Academy (2012).  The National Expert Witness Academy Program is put on by The Advocates’ Society to educate experts about their role as witnesses, and to enhance their report writing and testifying skills.


  • LLB, University of Ottawa, 2009
  • BA (with distinction), University of Western Ontario, 2006