The legal disputes between Arm and Qualcomm are heating up -- and billions of dollars in revenue for both companies are at stake.Shares of Arm (ARM -7.15%) lost ground in Wednesday morning trading. The semiconductor company's stock price was down by 6.1% as of 12:55 p.m. ET.Bloomberg published a report Tuesday night stating that Arm had informed Qualcomm that it plans to cancel its chip design architecture licensing arrangement. If that does happen, it could result in significant sales and earnings declines ...