Australia’s high court finds singer’s label and merchandise distributor had been ‘assiduous infringers’ of trademark

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The Sydney fashion designer behind the Katie Perry label has won her epic trademark dispute with US pop star Katy Perry, after a legal battle lasting almost 17 years.

In a majority decision on Wednesday, Australia’s high court found the designer’s label did not breach trademark laws and was not likely to cause confusion, regardless of the singer’s reputation when it was registered.