The Beatles, Apple, and iTunes
novus ordo writes "Apple is being sued in London by Apple Corps, owned by the former Beatles and their heirs. This is a third battle over the name 'Apple' in Britain. Apple Corps has previously been awarded $26M by Apple Computer for the use of the name."
I'm not a lawyer, but I sure think that Apple Corps has a great case. There is both precedent where Apple Computer lost and paid damages and there is retention of trademark which is, as stated above, still in active usage.