Justice Ian Jackman

A former US congressman who holds shares in Queensland gold mining company Citigold is seeking to bring a derivative action in the Federal Court, accusing the brother of company chairman Mark Lynch of trading on sensitive inside information.

A class action against Meta over social media addiction will have to wait until a second prospective class action is lodged as planned, a court said Tuesday. 

Australian Radio Network's board thought Jackie O Henderson was not worth $10 million a year without co-host Kyle Sandilands, a court has heard as it rejects access to documents over which the broadcaster and the radio star claim privilege.

A demolition company has appealed the dismissal of its case over the collapse of Sydney Entertainment Centre's roof, which sought coverage under an insurance policy held by the since deregistered contractor that hired it.

Swiss pharmaceutical company Actelion has brought a fourth patent infringement case over plans to launch a generic version of its blood pressure drug in Australia -- against Lupin unit Generic Health -- after firing off cases against three other drug makers. 

Digital giant Meta faces a class action in the Federal Court after the company's multibillion-dollar settlement in the US over harms caused by its social media platforms – the first Australian class action of its kind.

Cipla Australia wants an undertaking it intends to give pharma company Actelion over plans to launch a generic version of a blood pressure drug to be shielded from rivals Arrotex, Nova Pharmaceuticals and MSN Laboratories, as those companies battle patent infringement claims. 

Radio host Jackie O Henderson is challenging broadcaster ARN Media’s claims of legal professional privilege over documents relating to a workplace investigation following her on-air clash with former co-host Kyle Sandilands, arguing the dominant purpose of the investigation was not to obtain legal advice.

Agribusiness investment firm Packhorse Pastoral has lost an appeal bid in a row with placement agent Burgoyne Capital, after its $120 million portfolio of cattle stations was put up for sale following the death of a co-founder.

Swiss drug companies Actelion and J&J's Janssen-Cilag have brought litigation against three generics makers over their plans to launch cheaper versions of two blood pressure medications.