A federal jury in the United States on Friday delivered a key win to mobile commputing titan Qualcomm in a licensing dispute with Arm, although proceedings between the chipmakers ended in mistrial.

In 2022, Arm ignited a legal battle after Qualcomm continued to pay its existing royalty fees to Arm, which were allegedly much lower than what Nuvia was paying. After the two failed to come to an agreement, Arm argued the designs licensed to Nuvia were no longer valid, and that Qualcomm should destroy the technology created with them.

Qualcomm's central processors are properly licensed under an agreement with Arm Holdings, a jury found in a trial in U.S. federal court that removed some, but not all, uncertainty around the mobile chipmaker's expansion into the laptop market.

Arm Holdings' lawsuit against Qualcomm ended on Friday with a jury delivering a mixed verdict that found for Qualcomm on a crucial issue, saying Qualcomm had properly licensed its central processor chips.

Qualcomm Inc.’s chief executive officer told a jury that its business suffered when customers were misled by computer-chip designer Arm Holdings Plc about the companies’ licensing agreement for chip technology vital to the electronics ecosystem.

The falling-out between the partners arose in 2022 when Arm claimed that Qualcomm violated the terms of a licensing agreement it had with Nuvia, a company that Qualcomm bought in

The chief executive of Arm on Monday downplayed the company's ambitions to become a chip supplier in its own right at a trial against Qualcomm, a major customer that pays Arm an estimated hundreds of millions of dollars per year.

Arm's legal dispute with Qualcomm is being argued before a federal jury in Delaware this week, pitting two of the world's most influential chipmakers against each other in an intellectual property case that threatens to roil the technology industry.