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The jury trial in the lawsuit brought by U.S. semiconductor giant Qualcomm against British chip design firm Arm Holdings began on the 5th in a federal court in Delaware. Qualcomm alleges that Arm failed to provide semiconductor testing tools it was contractually obligated to supply, and that when it notified Qualcomm in 2024 of the termination of a key licensing agreement, it leaked that information to the media, harming negotiations over a chip deal with Meta Platforms. In this lawsuit, Qualcomm is seeking the right to suspend royalty payments to Arm for up to five years, and the amount involved could reach billions of dollars. In her opening statement, Qualcomm attorney Karen Dunn said Arm executives referred to Qualcomm as an "enemy" in internal documents and were concerned about a sharp drop in royalty revenue. In response, Arm attorney Greg Locascio countered that he would present evidence showing Qualcomm has in fact suffered no damages. The jury trial is scheduled to last five days and marks a new phase in the two companies' long-running dispute.