Oh, there are original inventions. But not when they're just visual reproductions of similar physical things.
Another good example is bounceback.
Ever seen what the item list on a slot machine reel does when it comes to the end of its scrolling? Yep, it first goes past the end position, then it bounces back into place!
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When we were developing electronic casino slots back in the early '90s, something seemed to be missing. Aha, I said, where's the slot reel bounceback like in the real machines? So we programmed that in. Totally unnecessary, but cooler than coming to an instant stop. Sound familiar?
Sometimes I jokingly think that Apple programmers went on trips to Reno and came back with patent ideas from early work we did on capacitive touchscreen gaming terminals.
Oh I think some people might honestly believe they invented something that no one has or will. Or, perhaps it's just their bosses who think that. In any case, it's almost never true with software.
Sure, for example some versions of the Neonode had little screen arrows pointing which way to swipe to unlock.
But that's just visuals. I have no problem with anyone claiming a very specific and unique graphic design. What I don't agree with, is trying to patent the action itself.
Apple does this a lot. As a long time touch developer, I was appalled to see their attempt to grab a patent on the idea of "rotating a knob" on screen with your fingers. Good golly, anyone developing with touch thinks of that one right away.
Who knows. Maybe Apple's developers and bosses are so isolated from the real world, that they actually believe they solely can invent these ridiculously obvious ideas. It doesn't help that patent examiners did not seem to have much touch experience at first.