Apple appealed on Friday against the ruling of a federal judge in the legal dispute with Fortnite manufacturer Epic Games over control of the App Store.
Apple moves to the Ninth Circuit Court of Appeals in San Francisco to overturn the 185-page judgment of US District Judge Yvonne Gonzalez-Rogers.
The judge ordered Apple to relax control of its payment options on the App Store, but said Epic had not proven any antitrust violations.
Epic filed its own appeal last month.
“We’ll keep fighting,” tweeted Epic boss Tim Sweeney as the company confirmed its plan to challenge the verdict.
Apple said in the days following the Gonzalez-Rogers ruling it was “very pleased” with the decision but left the door open for appeal.
The companies opted for a so-called bench trial, in which a judge instead of a jury hears the evidence and decides on a verdict.
Epic launched the case with the aim of breaking Apple’s influence on the App Store, accusing the iPhone maker of behaving like a monopoly on its digital goods or service shop.
“For me, it’s a win for Apple as the judge has clearly stated that they are not showing any monopoly behavior,” said Carolina Milanesi, an analyst with Creative Strategies, after the verdict.
“I don’t think it’s a problem for Apple from a sales perspective.”
The judge forbade Apple to forbid developers to include “external links or other calls to action that lead customers to purchase mechanisms” in their apps.
Apple can still require its payment systems to be used for in-app transactions.