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AAP
AAP
National
Zac de Silva

Final roar in Katy v Katie court war over trademark

High Court judges will have the final say on the legal dispute between Katie Taylor and Katy Perry. (James Ross/AAP PHOTOS)

How famous was Katy Perry in 2008?

That's one of the questions Australia's highest court is considering, after hearing arguments in a long-running trademark dispute between the pop star and a fashion designer with almost the same name.

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