The one thing Apple really excels at is innovation in design, and they know it. So, three years ago they sought to patent both the slide to unlock feature of the Lock screen and the letters that pop-up when you're typing on the iPhone's keyboard.
Today, those patents were finally granted. Titled "Animated graphical user interface for a display screen of portion thereof," the patent covers both features Apple sought to protect. Most smartphone manufacturers have avoided elements like these, but now Apple can officially ask for license fees from copycats.