[good thing they don't own a patent for a circular button, ]
At the rate Apple is applying patent now, soon they will own everything under the sky, in the sky, and beyond the sky. The sad fact is, many of these patents actually get approved. Things like page turning animation is actually owned by Apple as patent now. Once upon a time, patent meant the whole design of something complicated and substantial like a "ice resurfacer". Now you can own the patent on something as simple as a rectangular shape as long as you do some creative writing to make it sounds better than what it actually means.