Both sides engage in hyperbole.
I think that Samsung at one time clearly chose to use a lot of the style elements that the iPhone popularized. For example, they added a rounded background to icons while other Android phones did not. (Mind you, Apple did not invent such a style).
At the same time, Samsung obviously did not copy the iphone "down to the last detail." The icons were different and so was most of the operation, since it was Android with multiple physical control buttons.
Furthermore, the iPhone had nothing like the Touchwiz UI overlay:
- You could set up from 1 to 7 homescreens, and add/ subtract/ rearrange them and their order with a finger. Apple: cannot rearrange entire screens at a time.
- The Home button brought up a list of recently used apps. Apple: copied this later when they finally added third party multitasking.
- Samsung's homescreens support widgets. Apple: no.
- Samsung included a file manager, task manager. Apple: no.
- Quick settings were available from the pulldown notification shade. Apple: no.
It'll be interesting to see what the jury decides.