Apple and mobile chip maker Qualcomm have settled a bitter financial dispute centred on some of the technology that enables iPhones to connect to the internet.
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The surprise truce announced on Tuesday came just as the former allies turned antagonists were facing off in a federal court trial that was supposed to unfold over the next month in San Diego.
The resolution abruptly ended that trial, which also involved Apple's key iPhone suppliers.
The deal requires Apple to pay Qualcomm an undisclosed amount. It also includes a six-year licensing agreement that likely involves recurring payments to the mobile chip maker.
Investors reacted as if it were a resounding victory for Qualcomm. The San Diego company's stock soared 23 per cent to close Tuesday at $US70.45. Apple shares edged up 2 cents to $US199.25.
Neither Apple nor Qualcomm would comment beyond a brief statement announcing they had resolved their differences.
Details about how much Apple and its iPhone suppliers will be paying Qualcomm could emerge in court documents or when the companies announce their latest financial results. Apple is due to report its quarterly results on April 30 while Qualcomm is scheduled to release its numbers on May 1.
Apple had been seeking at least $US1 billion ($A1.34 billion) for money that Qualcomm was supposed to rebate as part of an earlier licensing agreement. Apple had begun to have misgivings about that deal as it added more features to its increasingly popular line-up of iPhones.
Qualcomm was seeking $US7 billion for unpaid royalties it contended it was owed for its patented technology in the iPhone. Apple's iPhone suppliers, including Foxconn and Pegatron, wanted another $US27 billion from Qualcomm.
Apple had already lost an earlier battle with Qualcomm last month when a federal court jury in San Diego decided the iPhone maker owed Qualcomm $US31 million for infringing on three of its patents.
Qualcomm still faces other potential fallout from its demands to be paid royalties in addition to the fees it charges for its mobile chips.
The Federal Trade Commission has accused the company of using its royalty system to stifle competition in the mobile chip market in another case in which Apple played a central role.
A trial about the FTC's lawsuit wrapped up in a San Jose, California, court in January, but the judge still hasn't issued a ruling.
Australian Associated Press
