Qualcomm Inc.

Apple seeks to void patent claims, fees in Qualcomm dispute

Apple is seeking to void some of Qualcomm's patent claims and licensing agreements, intensifying its legal battle with the chip maker over the technology in iPhones and iPads.

In a federal court filing Tuesday, Apple cited a Supreme Court ruling last month that a printer-cartridge maker's patent rights end with the initial sale of the cartridges. Apple says that ruling strengthens its argument that Qualcomm cannot continue to demand royalties for the patents after selling its cellular chips.

The new court documents expand on a $1 billion lawsuit Apple filed in January in U.S. District Court in San Diego. Qualcomm has disputed Apple's claims that it is overcharging for...

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