Earlier quoted context omitted.
There is a big misunderstanding of patents. Patents don't cover ideas, but inventions. "Pinch to zoom" is a feature, and the idea of doing that is not patentable by Apple or Jeff Han. It is the implementation that is patentable, and Apple's touch technology is very different from Jeff Hans'. It's quite possible that both could legitimately patent their inventions.... just as the rotory and the piston engines can both…
Your understanding disagrees with current law.
Patents don't cover ideas, they cover implementation. Literally if your way of implementing something is the non-obvious way to make something more efficient, you are granted the right to exclusive use of it.
Apple, by act of jury, now has a patent on the idea and not the implementation. The patent is on a capacitive touch screen, but is a jury going to uphold a patent if it is an optical touchscreen? What if I use pinch-zoom on my Kinect?