Dave Stewart is a partner in Jackson McDonald's Intellectual Property team and one of Australia's leading trade mark and brand protection lawyers. With more than 30 years of experience, he advises clients on the protection, commercialisation and enforcement of intellectual property rights across Australia and internationally. Having practised IP law in both Australia and Hong Kong, Dave is consistently recognised by leading industry rankings, including the WTR 1000, Managing IP's IP Stars and Doyle's Guide. He specialises in trade marks, brand protection and intellectual property disputes, acting for clients across a wide range of industries. Dave regularly appears in trade mark opposition proceedings and complex IP disputes. He has acted as counsel in 30 inter partes and ex parte hearings before delegates of the Australian Trade Marks Registrar, achieving successful outcomes in two-thirds of those matters. Notable cases include Jacksons Drawing Supplies Pty Ltd v Jackson's Art Supplies Ltd (No 2) [2025] FCA 1127, Janssen Biotech, Inc v Celltrion, Inc. [2014] ATMO 121, Lockheed Martin Corporation v Raytheon Company [2012] ATMO 103, Cash Converters Pty Ltd v Margo Chaille Webber [2013] ATMO 101 and Deckers Outdoor Corporation v B&B McDougal [2006] ATMO 5.