Apple appealed the European Union's decision to apply stricter rules on its operating system iOS and App Store.

Apple lost its bid to escape digital competition rules after an EU court on Wednesday rejected the U.S. giant's challenge.

Apple appealed the European Union's decision to apply stricter rules known as the Digital Markets Act (DMA) to its operating system iOS and App Store.

"The General Court dismisses all the actions brought by Apple," the Luxembourg-based court said in a statement. "It confirms the designation of Apple as a gatekeeper in relation to the App Store and iOS."

Companies like Apple are designated a so-called "gatekeeper" under the DMA, and their apps are subject to extra scrutiny as "core platform services."