Apple's Trademark for 'There's an App For That' Approved
Apple's screenshot submitted as evidence of tagline's use
As noted by TUAW, the U.S. Patent and Trademark Office (USPTO) is moving to approve a registered trademark for Apple's much-used advertising tagline for the iPhone and App Store...
http://www.macrumors.com/2010/10/11/apples-trademark-for-theres-an-app-for-that-approved/