The final verdict is in. Australian fashion designer Katie Jane Taylor has emerged victorious in a years-long legal battle against global superstar Katy Perry (born Katheryn Hudson). On March 11, 2026, the High Court of Australia ruled in favor of the small business owner, ending a trademark dispute that has captured international attention since 2019.

The court's decision overturns a previous 2024 appeal ruling that had favored the singer. The justices found that Taylor’s brand, "Katie Perry," which she established in 2007, did not breach trademark laws. Instead, the court noted that the pop star’s company, Killer Queen LLC, had "assiduously infringed" on the designer’s trademark by selling apparel in Australia despite not holding the specific trademark for clothing in the country.

This ruling provides a definitive win for Taylor, who has spent years fighting to protect her namesake brand. The High Court emphasized that Taylor's label was unlikely to cause confusion with the pop star's brand. With this final decision, Taylor can continue to operate her fashion business across Australia without the threat of further legal action from the "Teenage Dream" singer.