Washington Post

Apple sued by app developer for alleged patent infringement, antitrust violation

While some developers have complained that Apple borrows their ideas and competes unfairly, it's rare for software developers to confront Apple, much less file suit. Foto: Alastair Pike / AFP

An app developer is accusing Apple of patent infringement and antitrust violations in a new lawsuit filed Friday in Delaware federal court.

Blix, the maker of an email client called Blue Mail, alleged that the recently launched "Sign in with Apple" feature infringes on its patents...

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