By Jess Jones Qualcomm has accused British chip designer Arm of strong-arm strategies after the company said it would cancel its chip design licence with the American manufacturer. Qualcomm, which uses Arm’s designs for its chips, claimed on Tuesday the move was an attempt to hike royalty rates. It also said it could disrupt an ongoing intellectual property dispute in the US, set to go to trial in Delaware in December. According to Bloomberg, Arm has issued Qualcomm a 60-day notice to terminate the licensing agreement. A licence revocation could put billions of dollars in revenue at stake, as …