Hrmmm... I'd probably be more sympathetic to Warner Bros if they hadn't put my favourite designer out of business by suing her for using 'Harry Potter' as a clothing brand. Of course, eventually she won, because her brand predated the books by about a decade... but she sold the company soon after winning. Sigh.
On a more amusing note... the Aussie company 'Eagle Boys' (pizza) was originally called 'Beagle Boys' and featured one of the Beagle Boys delivering a pizza... 'til Disney got wind of it