Qualcomm said in a court hearing on October 26 that Apple Inc is $7 billion behind in patent royalty payments to the mobile chip firm, which for years supplied parts for the iPhone.
Apple and Qualcomm are involved in a series legal actions. Apple has accused Qualcomm of unfair patent licensing practices. Qualcomm, the world's largest mobile phone chip supplier, has in turn accused Apple of patent infringement.
Qualcomm made its comments about the size of Apple's unpaid royalties in a hearing in one of the cases in federal court in San Diego. Apple has disputed the amount of royalties that it owes to Qualcomm.