In one of the most obvious moves in technology industry litigation, Apple has filed a complaint about Amazon's use of the term "Appstore" for its recently launched Android app centre.
When Pocket-lint first reported on the Amazon Appstore we said this about the name: "all lower case letters and one word on Amazon's landing page - what will Apple say about that we wonder?"
Well, we can wonder no longer as Apple said this: "Amazon has unlawfully used the App Store mark to solicit software developers throughout the United States."
The Cupertino based tech giant also said, in its complaint to a federal court in California filed on 18 March, that: "Amazon has begun improperly using Apple’s App Store mark in connection with Amazon’s mobile-software developer program."
Amazon declined to comment on the legal action, but you can expect this one to run and run.
The online e-retailer would have been well aware that Apple would have kicked up a stink once the Appstore went live, and will no doubt have a pithy response all waiting to go.
We suspect it will only be a couple of days before we see it, so watch this space.