In what would be a major escalation of its legal dispute with Apple, Qualcomm is preparing to ask the US International Trade Commission to ban the imports of iPhones, according to a Bloomberg report.
The dispute revolves around patents Qualcomm holds that allow it to charge a percentage of the price on smartphones regardless of whether the devices use its chips.
Apple has argued the system is unfair.
Qualcomm said recently that Apple is withholding payments to Apple’s contract manufacturers for the royalties those contract manufacturers owe under their licenses with Qualcomm for sales during the quarter ended March 31, 2017.
In January, Apple filed a lawsuit accusing Qualcomm of overcharging for chips and refusing to pay $1 billion in promised rebates.