Last mentioned: Mar 18, 2026
Final Ruling
High Court strikes down the detention provisions, ordering the plaintiff's release or transition to supervision.
High Court Final Ruling
High Court reinstates Taylor's win and trademark protection.
High Court Appeal
Plaintiff's legal team challenges the validity of the High Risk Offenders Act.
Appeal Overturned
Full Federal Court cancels Taylor's trademark on appeal.
Sentence Expiry
The original prison term concludes; government applies for a Continuing Detention Order (CDO).
Initial Victory
Justice Markovic rules in favor of the designer in the Federal Court.
Litigation Commences
Taylor sues the singer for trademark infringement.
Brand Launch
Katie Taylor begins trading as Katie Perry in Sydney.
Original Conviction
The plaintiff was sentenced to 20 years for murder.
The High Court of Australia has ruled in favor of a convicted murderer, declaring that executive-led post-sentence detention regimes infringe upon judicial independence. This decision forces an immediate overhaul of state and federal 'high-risk offender' frameworks and impacts hundreds of current detention orders.
The High Court of Australia has finalized a seven-year trademark dispute, ruling that Sydney designer Katie Taylor (trading as Katie Perry) did not infringe on pop star Katy Perry's brand. The court found the singer lacked a commercial reputation in the Australian clothing market at the time the designer's trademark was established.