Wasn't the whole point of having a lay jury that Samsung's copying was so blatant (they did take the piss on a few of their designs...) that an average person could confuse one of their devices for an iPhone?
That said, I am not defending in any way this patent law fucktardery that's gotten us to where they are today.
Is this stuff getting too complex for lay juries?
In the UK, there have been serious fraud cases that have collapsed simply through jury attrition and lack of capability to understand the evidence.