Do you really think Apple invented pinch-to-zoom? CMU Sensor Lab had it back in ’85. Steve Jobs coincidentally visited soon after and later claimed to have patented the technology for the iPhone. That was shown not to be true in the big Apple vs. Samsung patent case.
No, I don't think they invented multitouch, I was referring to the name of the gesture. "Pinch to zoom" is afaik their invention, as opposed to "two or more input points applied to the touch-sensitive display that are interpreted as the gesture operation", as the article mentions.
The issue is about naming and communicating UI in an intuitive manner. Which should be solved by acceptance testing.
References available upon request.