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Jersey Shore's Snooki (aka Nicole Polizzi) has lost a bid to trademark her famous nickname.

The US Patent Office refused to approve the pint-sized star's application to trademark "Snooki" for an upcoming book because the name had already been registered for a children's book, "Adventures of Snooky," about a cat who gets knocked overboard while on a family fishing trip, says TSG.

But her bid for a patent isn't totally underwater. Her application to trademark “Snooki” for use in “Entertainment in the nature of personal appearances by a television personality” seems to be still on track.