Any company that makes Arm chips must license technology from Arm Holdings plc, the British company that develops the instruction set. Companies can license the instruction set and create their own CPU designs or license one of Arm's ready-made Cortex CPU core designs to incorporate into their own chips.

The chip design firm gave a mandated 60-day notice of their cancelation to Qualcomm, Bloomberg reports. Arm claims that when Qualcomm acquired AI chip company Nuvia - which uses the Arm architecture - for $1.4 billion in 2021, it was required to seek Arm's approval to transfer licenses from Nuvia over to Qualcomm.

Arm has taken its feud with Qualcomm to the next level, two years after filing a lawsuit against its former close partner. According to Bloomberg, the British semiconductor company has canceled the architecture license allowing Qualcomm to use its intellectual property and standards for chip design.