The singer has been locked in a long legal battle with an Australian fashion designer over their shared name.

Katy Perry at iHeartRadio Z100's Jingle Ball 2024 at Madison Square Garden on December 13, 2024 in New York, New York. Kristina Bumphrey/Billboard

Katy Perry has been dealt a loss in her long-running trademark dispute with an Australian fashion designer named Katie Perry — but the case is not yet over.

In a Wednesday (March 11) ruling, Australia’s highest court sided with designer Katie Perry, who also goes by her married name Katie Taylor, to restore her brand’s trademark. A lower court had previously granted pop star Katy Perry’s request to cancel the trademark in response to an infringement lawsuit initiated by Katie.

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The case will now head back down for further litigation on Katie’s claims, brought in 2019, that accuse Katy of infringing her fashion brand’s trademarks by selling official merch in Australia.…