"I think Apple's legal team did a very good job of conveying their message, but I also think people in America just intuitively know that Apple did change things, they changed it with the iPhone and they changed it with the iPad," he said.

That belief among jurors may also help to explain why they reached a verdict so quickly.

"Samsung had a huge hurdle, which is that even lay people know [Apple's] phones changed everything, and for them to be able to fight that was already very difficult," he said.

The jury also found that Samsung infringed Apple's patents wilfully, or knowingly. In those circumstances a judge can often award treble damages.

"Wilful infringement often makes things go through the roof; Samsung is in big trouble, no question," said Futterman.