Judge Dismisses Apple Trademark Claims Against Amazon's Appstore
In early 2011, Apple sued Amazon over the latter company's new "Appstore" for Android devices, claiming the 'app store' name was trademarked by Apple and would cause confusion amongst consumers.
Apple claimed Amazon's "inferior" app store would tarnish Apple's reputation. Last year, a judge indicated skepticism over Apple's claims, saying Apple had not demonstrated "real evidence of actual confusion" between the various "app stores", and suggested that Apple was "not likely to prevail" in the case.
Microsoft also fought against Apple, arguing that 'app store' is a compound noun that is a generic characterization of the store itself -- a store for apps.
Update: The Verge has the complete court ruling, which actually addresses only the false advertising aspect of Apple's claims. The dispute over the alleged trademark infringement by Amazon remains active.