This is the big deal. If you use Apple App Store you accept in the Eula that Apple could use any of your ideas or patents without compensation. But they could

This is the big deal. If you use Apple App Store you accept in the Eula that Apple could use any of your ideas or patents without compensation. But they could tell you to pay more to them if you use the bouncing effect in a graph, something I was doing five years ago. It is true that Samsumg stole a lot of Apple's design but also true that Apple did the same with Google Earth, gmail design, dropbox, OLPC sandboxing and process interruption. Good designers are always learning from others.