Internal Qualcomm documents showed the chip firm estimated it could eventually save as much as $1.4 billion a year on payments to Arm by purchasing a little-known startup in 2021, according to evidence shown at a trial on Wednesday.

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.