The judge ruled last year the Google Play app store was required to make changes to its payment system after forcing app developers to explicitly use its proprietary system.

Alphabet Inc.’s Google is asking a federal appeals court to throw out a ruling in an antitrust case brought by Fortnite-maker Epic Games that would force the search giant to overhaul its Play mobile app store.

Alphabet's Google has urged a U.S. appeals court to overturn a judge's order mandating changes to its Play Store, stemming from Epic Games' claims of monopoly practices. Google argues that the trial's decision was biased and could negatively impact both developers and consumers.