A Nokia patent lawsuit could cost Apple as much as $1 billion in back payments, argues Strategy Analytics' Neil Mawston. The analyst tells Reuters that because of the over 34 million iPhones Apple has shipped to date, the company could owe anywhere between $200 million and $1 billion, depending on the terms of a settlement. Pund-IT analyst Charles King suggests that a $400 million figure more likely, assuming a 2 percent royalty scheme.