According to foreign media reports, Apple filed a counterclaim against Qualcomm on Wednesday, accusing Qualcomm's Snapdragon cell phone chip of violating Apple's patent rights, which further expanded the coverage of the protracted patent litigation battle between the two companies.
In July, Qualcomm accused Apple of violating several patents related to helping mobile phones get longer battery life.
Apple denied that it infringed Qualcomm's patent for battery life and claimed Qualcomm's patents were invalid. For such cases, Apple's reaction is a common practice.
However, Apple submitted a paper Wednesday in San Diego's U.S. District Court, amending its response to Qualcomm's allegations. Apple claims it owns at least eight patents for battery life, and it is precisely Qualcomm that infringes on these patents.
Apple's patents include ensuring that each part of the handset processor draws only the minimum amount of power needed, shuts down parts of the processor when not needed, and enables hibernation and wake-up functions to work better.
Apple said in a filing that Qualcomm's Snapdragon 800 and 820 processors violated the patents. Samsung's high-end phones and Alphabet's Pixel phones are equipped with both processors. Apple did not mention Samsung and Google in the counterclaim.
Apple wrote in its indictment: "In the case, Qualcomm began seeking these patents a few years ago before it began seeking to own the patents. & rdquo;
Apple is still in the counterclaim filed a claim to Qualcomm.
Qualcomm also filed a lawsuit against the U.S. International Trade Commission while filing a patent infringement lawsuit against the company for allegedly infringing on patents forbidding the import of Apple's iPhone using Intel chips.
Patent disputes between Apple and Qualcomm are part of a broader legal battle between the two companies.
In January of this year, Apple accused Qualcomm of retaining nearly 1 billion US dollars patent royalties. In another related lawsuit, Qualcomm sued the Apple phone maker, but Apple joined in and defended those manufacturers.
In addition, Qualcomm is facing litigation from the U.S. Federal Trade Commission, as Apple filed allegations against many of its pricing practices.