Apple has filed an emergency motion asking the Ninth Circuit Court of Appeals to pause key parts of a recent ruling that dramatically changes how

Apple said in a court filing that a judge's order for it to ease restrictions on app developers would cost it "substantial sums annually" if the ruling is allowed to stand.

Epic Games' fight to change Apple's App Store rules has been an expensive activity for the game maker, with CEO Tim Sweeney believing it could ultimately cost the company more than $1 billion.