Apple introduced AirDrop as one new feature included in Mac OS X Lion. AirDrop is a file sharing service that lets you easily send files to other nearby AirDrop users. Apple now owns the trademark for the service, apparently acquiring it from Urban Airship, Inc.
The trademark application was submitted last year by Urban Airship, Inc and the AirDrop service was launched last year. The service was advertised as a way for Android app developers to easily promote their applications. Android App developers could sign up for the service and send promo codes to reviewers and for giveaways.