Katy Perry loses trademark battle against Katie Perry

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Judge ruled clothing sold during Katy's 2014 Australian tour breached Katie's trademark.

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Justice Brigitte Markovic described it as a "tale of two women, two teenage dreams and one name."

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Singer used the name in "good faith" and won't owe personal compensation to designer.

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But Katy's company, Kitty Purry, must pay damages to be decided next month.

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Designer started selling clothes under "Katie Perry" brand in 2007, registered it in 2008.

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Katy infringed the trademark by promoting certain merchandise on social media.

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Justice Markovic dismissed Katy's bid to cancel the Katie Perry trademark; designer declared victory.

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Created by: Fabiano Souza Images: internet / instagram

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