Those weren't prototype iPhones, IMO. They were created to illustrate the vision a Sony designer described in a newspaper interview.

Maybe at the time they weren't and thus not relevant to the lawsuit, but they look very very similar to the iPhone 4/4S.

Nope:

http://www.theverge.com/2012/7/30/3201162/apple-refutes-clai...

Odd seeing the 'home' button called 'menu' in the p2 mock up below the Sony/Jony gallery.