Sydney media and commercial lawyer

Mark O'Brien, Lawyer and Owner of Mark O'Brien Legal

Mark Geoffrey O'Brien is a media and commercial lawyer with more than 40 years' experience, and one of Australia's best known defamation lawyers. He founded Mark O'Brien Legal in Sydney in 2014.

Visit Mark O'Brien Legal   Read Mark's story

Mark O'Brien, lawyer and founder of Mark O'Brien Legal
40+ yearsin practice
Admitted 1970New South Wales
Band 1, MediaChambers Asia Pacific 2019
BA LLBUniversity of Sydney

Expertise

Where Mark advises

Defamation and media law

Advising media companies, public figures and businesses on defamation, broadcasting, contempt and copyright.

Reputation and crisis management

Strategic advice for individuals and organisations when their reputation is in issue.

Commercial disputes

Litigation in the Federal Court and the Supreme Courts of Australia, and international commercial disputes.

ICAC and ASIC investigations

Representing private and corporate clients in investigations and hearings.

White collar prosecutions

Acting for defendants in ASIC prosecutions under the Corporations Act and Crimes Act.

Intellectual property

Trade mark and copyright matters, including Federal Court proceedings.

See Mark's expertise in detail

Recognition

Recognised by peers and press

Mark O'Brien Legal

Need advice on defamation, media or a commercial dispute?

Speak with Mark through his firm, Mark O'Brien Legal, in Sydney.

Visit Mark O'Brien Legal   Call 02 9216 9827