Qualcomm filed three more patent infringement complaints against Apple, just one day after Apple turned the tables and accused Qualcomm of infringing patents held by Apple.
Qualcomm filed three new patent infringement complaints in U.S. District Court in San Diego, alleging Apple is in violation of an additional 16 patents held by Qualcomm. The firm also filed a new complaint against Apple at the U.S. International Trade Commission, arguing that Apple is in violation of five of the same patents.
"Like the patents we asserted at the ITC in July, all of the 16 patents are non-standards essential patents implemented outside of the modem. Apple continues to use each of these patents in its devices without paying for them," Qualcomm said.
Apple did not comment on the new cases, referring to its earlier claims in its Wednesday filing that the company has developed its own technology and patents to power its iPhones.
Apple filed a $1 billion suit against Qualcomm in January over allegedly withheld royalty rebates. Qualcomm first filed suit against Apple alleging infringement of battery life technology patents in July, around the same time it asked the ITC to ban the importation of Apple iPhones that use Intel modems.