While of only tangential relation to Android (the Amazon Appstore is an Android app store after all), when Apple filed a lawsuit against Amazon over 2 years ago for infringing its trademark on "App Store," I got a bit perturbed. Their reasoning? Well, basically there wasn't much in the way of good legal argument for the case from day one. In fact, Apple probably knew the likelihood of a victory was low, and has been biding time hoping that Amazon would cave to a settlement demand.
Let me just quote directly from Apple's original response to Amazon's defense against the lawsuit, which I think sums up the legitimacy of Apple's position in this whole debacle sufficiently:
Apple denies that, based on their common meaning, the words “app store” together denote a store for apps.