Brian O'Callaghan
About Brian O'Callaghan
Brian O'Callaghan is a lawyer based in Canberra, AU and has been recognized in The Best Lawyers in Australia™ since 2008. Brian O'Callaghan is recognized in the following practice areas:
-
Canberra, Australia
- Corporate / Governance Practice
- Government Practice
- Public Law
Current Firm: Clayton Utz
Location: Canberra, AU
Nearby Lawyers
Bill has been a legal practitioner for over 30 years specialising in personal injury law including motor vehicle accidents and public liability, workers compensation, medical and dental negligence, and historical child sexual abuse cases. His practice also includes commercial litigation in the ACT courts involving insurance and professional indemnity issues, building and contract disputes, and employment matters. Bill’s straightforward manner complements his extensive experience and kno...
Alistair specialises in the preparation and prosecution of patent applications in the areas of physics, computer software, business methods and electronic devices, including their application to the medical, biotechnology and cleantech areas. He is experienced in providing advice on patentability, patent infringement and validity, as well as conducting IP audits and providing strategy advice to start-up companies. Alistair also regularly presents seminars on advising on issues surrounding IP ...
Elissa Speight is a top attorney recognized by Best Lawyers in the practice area(s) of Government Practice and Labour and Employment Law. Elissa, who practices law in Canberra, Australia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elissa is held by other top lawyers in the same geographic and legal practice area.
Paul Vane-Tempest is a top attorney recognized by Best Lawyers in the practice area(s) of Bet-the-Company Litigation, Government Practice, Labour and Employment Law, Litigation and Occupational Health and Safety Law. Paul, who practices law in Canberra, Australia, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul is held by other top lawyers in the same geographic and legal practice area.
Hyans Mach is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Law, Corporate / Governance Practice and Government Practice. Hyans, who practices law in Canberra, Australia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hyans is held by other top lawyers in the same geographic and legal practice area.
Keith is a Director in the Estates and Estate Planning Section and brings more than 40 years’ experience in legal practice. An active member of the legal community in Canberra, he is regularly asked to lecture on various aspects of estate planning including charitable trusts, special disability trusts, succession planning, superannuation and family provision claims. He is a member of the Financial Planning Association Australia, a Member of the Society of Trust and Estate Practitioners ...
John Hill is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Law and Insolvency and Reorganization Law. John, who practices law in Canberra, Australia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John is held by other top lawyers in the same geographic and legal practice area.
Rebecca has extensive experience in advising the Commonwealth in relation to workers’ compensation matters. She is fully cognisant of the responsibilities of the Commonwealth in adhering to the Model Litigant Policy and the unique challenges that this can bring. In a previous role Rebecca successfully held the position of National Client Service Manager for Comcare, which, as a significant client, brought enormous responsibility from a business perspective. Rebecca is focussed on delive...
https://www.linkedin.com/in/bernice-ellis-74876523/ https://www.thelawyermag.com/au/news/general/laugh-every-day-says-mills-oakley-partner/228601 Bernice has a broad-ranging commercial-disputes practice, but her specialities are insolvency and debt recovery, shareholder disputes, building and construction disputes, and tax disputes. She is sought out for her sound technical advice, along with her straight-talking and commercially pragmatic approach to protecting the interests of her clients. ...
Jeremy's practice spans work with a range of government and corporate clients. He has acted in claims before the High Court, Federal Court, various Supreme Courts and the Administrative Appeals Tribunal. Some of Jeremy's government experience includes: representing a Commonwealth regulator in a challenge to a legislative instrument on grounds of unreasonableness and that the regulator had acted beyond its power defending claims against a range of Commonwealth entities concerning allegations o...
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.