When was apple granted the pinch to zoom and other gestures? They're not only incredibly obvious, anyone who has turned a page on a book would come up with using a swipe gesture to turn a page on the screen, only difference is few fingers or hand vs single finger.
Anyone who watches sci-fi films will have likely seen a pinch to zoom too, minority report in 2002 had a full hand pinch to zoom and swipe gestures
http://www.youtube.com/watch?v=NwVBzx0LMNQ
I really wish when it came to software, you had to just rely on copyright. Nobody should be allowed to steal your code, but if they can reproduce a feature without seeing your code or how you did it, that should be fine.