Leader of the Osler national tax litigation practice who splits his time between the firm's Calgary and Toronto offices. Widely regarded as one of Canada’s leading tax litigators who appears regularly in the Tax Court and the Federal Court for leading Canadian and multinational corporations in significant and complex corporate tax litigation matters. Has argued a number of landmark tax cases in the SCC including successfully arguing the first GAAR case and the first and only transfer pricing case heard by the Court. Has also successfully represented the Canadian Bankers Association and more recently the Canadian Association of Petroleum Producers as intervenor in the SCC in landmark cases effecting the banking and oil & gas sectors. Previously of the Tax Litigation Section of the Department of Justice in Ottawa. Also a Chartered Public Accountant. LLM, Harvard Law School (1990). Admitted to the Ontario Bar in 1990 and the Alberta Bar in 1995.