In the world of technology, getting patents is the best way to protect your intellectual property. Apple filed for two design patents around 3 years back, for features that every iPhone user is now familiar with: “Slide to Unlock” which allows you to unlock your iPhone by sliding your finger on the display, and “Keyboard Letter Pop” which enlarges the letters that you select on the virtual keyboard when typing.
Today, the USPTO has awarded those two patents to Apple.
Both these features have been very popular with the users and have seen similar implementations in many other touch interfaces for the Android OS and Windows Mobile.
You can check out the details of the two patents here: