A federal appeals court on Thursday backed a ruling that held Apple in civil contempt for brazenly defying an order designed to open its iPhone app store to other payment systems besides its own, but the decision also reopened a door for the company to collect commission from the rival options.

The unanimous decision by a three-judge panel for the Ninth Circuit Court of Appeals mostly validated a scalding contempt order issued in April by US District Judge Yvonne Gonzalez Rogers for violating a key part of her September 2021 findings in a legal battle instigated by video game maker Epic Games.