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 Arm v Qualcomm lawsuit continued in Wilmington Delaware yesterday with lawyers trying to decide how much Arm technology was contained in a Qualcomm PC

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.

The long-awaited jury trial, which is expected to play out over the next five days, comes more than two years after Arm first filed suit against one of its largest customers over allegations that Qualcomm had breached the terms of its licenses.

The legal showdown between chip giants Qualcomm and Arm is unfolding this week in a Delaware courtroom. The jury trial began Monday with opening arguments, and

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.