Mark O'Brien
Recognized in Best Lawyers since 2022 About Mark O'Brien
Mark O'Brien is a lawyer based in Sydney, AU and has been recognized in The Best Lawyers in Australia™ since 2022. Mark O'Brien is recognized in the following practice area:
- Sydney, Australia
- Defamation and Media Law
Current Firm: Mark O'Brien Legal
Location: Sydney, AU
Nearby Lawyers
Adam Casselden SC is a lawyer recognized by Best Lawyers in the practice areas of Sports Law and Transportation Law. Adam practices law in Sydney, Australia Best Lawyers has recognized Adam Casselden SC since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Adam Casselden SC is held by other lawyers.
Marial Lewis is one of Australia's top immigration lawyers. She is an accredited specialist in Immigration Law by the Law Society of NSW as well as two times winner of the prestigious Lawyers Weekly 30 under 30 in 2021 and 2022 and the 2020 John Gibson Award - Young Migration Lawyer of the year by the Law Council of Australia. She was also named as a finalist in various national awards including, Partner of the year in migration and innovation, rising star of the year for the Australasian Law...
Mark is an experienced and reliable silk practising in tax, equity and trusts, commercial law, public and administrative law, and professional regulation. His clients include individuals, trustees, corporations and government authorities. He is sought out in particular for advice on international, Federal and State taxation and on trusts in tax and non-tax situations. He holds a PhD from Sydney in international tax law and teaches advanced international tax in the Melbourne Law Masters progra...
Julian Courtney-Stubbs is a lawyer recognized by Best Lawyers in the practice area of Telecommunications Law. Julian practices law in Sydney, Australia Best Lawyers has recognized Julian Courtney-Stubbs since 2022. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Julian Courtney-Stubbs is held by other lawyers.
Katherine Czoch is a lawyer recognized by Best Lawyers in the practice areas of Information Technology Law, Insurance Law, Litigation and Professional Malpractice Litigation. Katherine practices law in Sydney, Australia Best Lawyers has recognized Katherine Czoch since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Katherine Czoch is held by other la...
David Thomas SC appears across Australia in a broad range of commercial and civil matters. He has a particular interest in class actions, regulatory, revenue and constitutional law. David appears at both trial and on appeal, including in the High Court. Commercial and corporate law : Recent clients include HSBC on appeal in the Dick Smith litigation, IAL in the Greensill disputes, Channel Seven in claims against Cricket Australia, the Rinehart children in litigation against Gina Rinehart, NAB...
David is the Principal of Reidlaw who has dedicated his practice exclusively to corporate and commercial law for over 25 years. With a specific focus on advising on mergers, restructures, incorporations, partnerships, trusts, joint ventures, commercial contracting, and funds management. David's experience includes advising on: the sale of an Australian information technology and services company to an Asia-Pacific located multinational (EV $60 million); the merger of two of the Hunter region'...
Explore and Learn
What AI Visibility Means for Lawyers
by Josh Rupall and Bryan Driscoll
AI tools increasingly interpret lawyers public information. Clear, consistent and credible sources help ensure they describe legal expertise accurately.
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
The Best Lawyers in Canada 2027: Recognizing the Nation's Top Legal Talent
by Jamilla Tabbara
Honoring established leaders and rising practitioners across Canada's legal profession.
2027 Best Lawyers Awards: Honoring Excellence in the Legal Profession
by Jamilla Tabbara
Recognizing the outstanding attorneys leading top practice areas nationwide.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland
by Jamilla Tabbara
Celebrating the legal professionals throughout Central Europe.
The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement
by Grace Greer
A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.
The Best Lawyers in France 2027: Peer-Reviewed Excellence
by Jamilla Tabbara
Seventeen editions of peer trust, a growing profession and a dynamic legal market.
What Is a Quitclaim Deed? Uses, Risks and When to Get Help
by Bryan Driscoll
A quitclaim deed can be one of the fastest ways to transfer property but knowing when it's the right tool and when it isn't, can save you from serious legal and financial headaches down the road.
