Jaan's practice embraces a diverse range of litigation: commercial disputes, professional liability, medical malpractice, franchising matters, class actions, employment, and administrative law. As co-leader of the firm’s Professional Liability & Regulation Practice Group, Jaan has particular expertise acting for physicians and other professionals in a broad range of matters, including in civil actions, regulatory matters, and criminal proceedings. Jaan has also acted as prosecution counsel for several regulated health colleges and the Law Society of Ontario. He has appeared before all levels of court in Ontario as well as in the Supreme Court of Canada.