Qualcomm could be about to lose its license to use Arm designs for its chips — and the consequences could be huge.

Chip firm Arm is cancelling an architectural license agreement that allows Qualcomm to use its intellectual property to design chips, a person familiar with the matter said, amid an ongoing legal battle between the two companies.

The chip technology company Arm has given Qualcomm 60 days notice, according to Bloomberg. Arm has reportedly canceled a license granted to Qualcomm to design chips based on its chip technology, according to a Bloomberg report on Tuesday.