Mark leads the Blakes Tax Controversy and Litigation group, where his practice focuses exclusively on resolving Canadian tax disputes. He represents many of Canada's and the world's largest and most sophisticated businesses in tax-related civil litigation, administrative appeals, audit defence, and in proactively managing tax dispute risks. Mark has successfully acted for taxpayers at all levels of court in Canada, with the Federal Court of Appeal describing his work as "exemplary" and with clients reporting to Chambers and Partners that Mark is "the consummate professional". He draws on Blakes' top-tier national tax practice to develop and execute comprehensive and practical strategies for resolving tax disputes as efficiently and favourably as possible, both within and beyond the courtroom.