It's no secret to anyone that while Apple sued HTC, the lawsuit is more about Google than HTC itself. Since Android is open source, and owned by no one, it's kind of hard to go after Google itself, and as such, HTC was the prime target, since it is the number one Android smartphone maker. The New York Times has an in-depth article up about the subject, with a whole boatload of quotes from people within the two companies, and it paints a picture of all this being a highly emotional and personal vendetta - especially from Apple's side.