Patrick O'Sullivan QC was admitted to practice in 1981 in South Australia. In 1988 he commenced worked with the Attorney General’s Chambers in Hong Kong where he was responsible for the conduct of complex commercial litigation, arbitration and mediation arising out of the many infrastructure contracts let by the Hong Kong Government. He appeared as Counsel in the High (Supreme) Court and Court of Appeal in Hong Kong, in Arbitrations and attended before the Privy Council.
Patrick returned to Adelaide in 1992 and worked in private practice before going to the Bar in 1997. He took Silk in 2008. He practises in commercial litigation and specialises in commercial construction. His practise involves major commercial litigation and Arbitration within South Australia, interstate and overseas.
Patrick is an accredited Mediator and Arbitrator.
In 2009 he was appointed Chair of the Dispute Resolution Board for the Adelaide Desalination Plant Project.
Patrick is again named in Doyle's 2017 Guide as "Leading South Australian Senior Counsel" in the field of construction.
In February 2016 Patrick was appointed President of the Australian Bar Association.