Apple has filed a lawsuit accusing Amazon of using the term "App Store," without its permission.
The iPhone maker reckons it owns a trademark on the term and is seeking damages as well as an injunction to stop the online retailer from using it.
Apple filed the complaint in the federal court for the Northern District of California on Friday.
In the complaint, the Beatles' publisher - er, no hang on - the maker of gadgets claimed: "Consumers of mobile software downloads are likely to be confused as to whether Amazon's mobile software download service is sponsored or approved by Apple."
Apple registered a trademark on the term App Store on July 17, 2008. Amazon calls its, er, App Store , without the space and the capital ess.
Microsoft recently challenged Apple's trademark of the term, saying it is generic and everyone should be able to use it. In it's filing, Microsoft said: "'App store' is a generic name that Apple should not be permitted to usurp for its exclusive use. Competitors should be free to use 'app store' to identify their own stores and the services offered in conjunction with those stores."
That case is ongoing.