The U.S. Justice Department’s antitrust division took issue in recent days with court rulings in two high-profile cases challenging the market dominance of major technology companies that did not directly involve DOJ.

The Justice Department filed amicus briefs supporting appeals of lower court rulings that favored tech giants Apple and Facebook. The first case, which is now before the U.S. Court Appeals for the Ninth Circuit, was brought by the video game company Epic Games challenging Apple’s App Store policies. The second brief supported an appeal by state attorneys general contesting Facebook’s alleged social networking monopoly.