Apple is basically a patent troll at this point. The original iPhone bore an interface (and still does) that is remarkably similar in layout to the Samsung F700, which was announced at CES in 2006 prior to the iPhone. Samsung isn't suing Apple over that -- but I bet had they known Apple would get their panties in a bunch over the same thing down the road, they would have.
It's not the first time Apple has lifted features from other sources, and it varies greatly. Their early OSes had low-level features present in things like DOS, and even today -- the iOS jailbreak community basically does nothing but feed Apple "new" ideas on their own platform.
They should stop being ridiculous and compete. Come out with something markedly better than what's being "imitated" so that nobody wants the imitations instead of trying to play patent whack-a-mole because there's a viable competitor to your product.
What a nonsense.