Plus Apple will eventually have to pay Samsung royalties and interest for the standards essential patents that Apple has been using for years without payment so far.
"Fair and reasonable" royalties.
It should also be noted that Samsung wouldn't have accepted any payment below the rate that they want, because that would be a big problem for them in court. "We want $2 billion". "But you already accepted $10 million, so that's that". (Obviously an extreme example, but it shows the problem).
Same as Nokia eventually received fair and reasonable royalties, and it may have been a much bigger number than Nokia expected because Apple sold an awful lot of iPhones.
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They didn't steal anything from Xerox. ALTO was shown to more than 2000 people by the time Jobs has seen it. Not to mention Jobs already traded 10000 APPL shares before the IPO to Xerox in return of the rights of the visit. So they were entitled to use any of the ideas they liked. PARC was more like a scientific lab where people had ideas about computing and those ideas weren't really a big secret. So obviously it had a big effect on most computer projects, including the mac, since most computer pioneers have seen what's being done there.
It's well known that Adele Goldberg protested quite heavily. She thought that Xerox was making a huge mistake for letting Jobs and his engineers in (for a generous payment), and quite possibly she was right. But fact is that Apple paid to be allowed in, and Xerox top management fully agreed to it. (I think the payment was permission to buy $10,000,000 worth of pre-IPO AAPL shares. Which would probably be worth a few billion if Xerox had kept them). But it is also a fact that Xerox didn't have many of the features that Apple created. There's the story of Bill Atkinson implementing overlapping windows because he was absolutely sure that he had seen them at PARC - turned out he was wrong, and the PARC guys had no overlapping windows because they thought it was too hard to do.
Similar, Microsoft was allowed to copy much of Apple's GUI because someone at Apple had actually signed a contract that allowed them to do it. Which was probably also a mistake.