This week's sponsor

Macminicolo Mac mini hosting for just $10 per month

Apple Files Trademarks for iPhone OS Icons

Patently Apple has find out that Apple has filed trademarks for 13 iPhone OS icons: Music, Phone, Compass, Texas Hold'em, Photos, Movies, Notes, Mail, iPod, Maps, World Clocks, Messages and Calculator.

I guess Apple just wants to protect its UI design from being copied by competitors, and we know that it happened many times before.