Apple on Monday lodged an appeal to challenge a U.S. judge’s ruling that ordered the tech company to immediately open its lucrative App Store to more competition. Apple in a court notice said it will ask the San Francisco-based 9th U.

It has been over six years since Epic started undercutting Steam's 30 percent revenue share for developers, asking for just 12 percent of sales on its then-new Epic Games Store. Now, Epic is going even further by reducing those fees to zero for a game's first $1 million in annual sales.

Apple is appealing to the Ninth Circuit after a recent setback in its legal battle with Epic Games. A judge ruled Apple breached an earlier court orde