Mark O'Brien

Accredited Criminal Law Specialist | Co-Founder of Doogue + George Defence Lawyers Bill Doogue is a distinguished criminal defence lawyer based in Melbourne, Australia, with over 30 years of experience in the legal profession. Admitted to practice in 1989, he has been an Accredited Criminal Law Specialist since 1998 and was recognised as one of Australia's five 'pre-eminent criminal lawyers' by Doyle’s Guide in 2024 .​ As a co-founder of Doogue + George Defence Lawyers, Bill leads a fir...

Stephen came to the Bar in 1998, taking silk ten years later. His practice ranges across all areas of public law, with a particular emphasis on Constitutional Law, Judicial Review, International Law and Revenue Law. He also practices extensively in Native Title (in which field he is a co-author of the leading textbook) and in regulatory pricing and economic matters. Stephen has an extensive appellate practice, having appeared in the Full Court of the High Court in over 70 proceedings (not cou...

Michael was called to the Bar in 2005 and was appointed Senior Counsel in 2019. He has a wide practice, specialising in the areas of revenue law, commercial law, Corporations law and public law. Michael acts for a diverse range of corporate, private and government clients. He frequently appears both for and against the Commonwealth and its regulatory agencies, including the Commissioner of Taxation, the Australian Competition and Consumer Commission and the Australian Securities and Investmen...

Mark has extensive experience working with clients across a range of industries and backgrounds. Specifically Mark specialises in corporate insolvency matters, commercial litigation and corporations law disputes, intellectual property and copyright litigation, and financial services disputes including securities enforcement. He also has extensive experience working with banks and wealth funds, and advising on matters related to Royal Commissions and inquires. Mark acts on behalf of a number o...

Warwick Painter is a Corporate partner in our Sydney office. Warwick has particular expertise in corporate law, managed funds, financial services regulation and equity capital markets, including capital raisings and ASX listings, corporate restructuring, listed and unlisted managed investment schemes, real estate investment trusts (REITS), the regulation and conduct of financial markets and mergers and acquisitions of businesses. Warwick brings to his clients a wealth of experience in corpora...

Jeremy is briefed to advise and appear across a wide range of matters. He appears at trial and on appeal, frequently in complex commercial causes. In addition to commercial causes, Jeremy often appears in regulatory proceedings arising under the Corporations Act 2001 and the Competition and Consumer Act 2010. Jeremy regularly appears in the Supreme Court of NSW, particularly in the Commercial List, other State Supreme Courts, the Federal Court, the NSW Land & Environment Court, and appeal...

Jacquie acts for employers in both the public and private sectors across a wide range of industries and sectors including education, sport, health and aged care, community services, financial services, IT, retail, manufacturing, transport and agribusiness. She acts for organisations of all sizes, from small employers to major institutions. Jacquie advises on individual and collective employment relationships from recruitment through termination and beyond: employment contracts; enterprise agr...

Brett was called to the Bar in 2009. Prior to this he was a Tipstaff in the Queensland Court of Appeal, and worked as a solicitor in competition law, insolvency, and general commercial litigation. Brett has a broad practice in corporate and commercial litigation, including building and construction, banking and finance, insolvency, equity, property, local government and environmental law, and intellectual property. He appears, regularly without senior counsel, in motions, trials, and appeals ...

Joe is an employment relations lawyer with over 20 years’ experience specialising in workplace relations at mid-tier and employer associations. Joe’s experience extends to providing advice and representation in matters across Australian tribunals and courts, including the Fair Work Commission and the Federal Courts of Australia. Joe has also represented clients in various inquests and commissions of inquiry, including in the Independent Commission Against Corruption and various St...

John was admitted as a solicitor in 2013 and called to the bar in 2023. He has a diverse practice across commercial, public, and criminal law. Before coming to the Bar, John was a Senior Associate in the litigation team at Arnold Bloch Leibler. He acted for companies and individuals on a wide range of commercial disputes, regulatory investigations and enforcement action, white collar criminal matters, and public inquiries. Prior to joining ABL in 2020, John was a senior solicitor at the North...