Qualcomm launches patent challenge to Apple ahead of antitrust case

Qualcomm Inc on Monday kicks off a patent challenge to Apple Inc, capping off a two-year legal strategy to put pressure on the iPhone maker before a major antitrust lawsuit between the two goes to trial in April.

Qualcomm, the world’s biggest maker of mobile chips, alleges in federal court in San Diego that Apple violated three of its patents, and is asking for tens of millions of dollars or more in damages.

The patent case is part of a two-year series of lawsuits around the world between the companies. Apple has alleged that Qualcomm engaged in illegal patent practices to protect a dominant position in the chip market, and Qualcomm has accused Apple of using its technology without compensation.