Singer Katy Perry has been locked in a years-long trademark dispute with an Australian designer.

Singer Katy Perry has been locked in a years-long trademark dispute with an Australian designer.

Australian designer Katie Perry has won the right to sell clothes under her name, claiming victory Wednesday in a years-long trademark spat with US pop megastar Katy Perry. 

Designer Katie Perry accused her far more famous namesake of trademark infringement, arguing she had claimed the "Katie Perry" brand before the singer became a global sensation. 

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