STORY: Apple challenged a $587 million EU antitrust fine in court on Monday (July 7).

The EU sanctioned Apple for contravening landmark rules aimed at curbing the power of Big Tech.

Regulators found in April that the iPhone maker had breached the Digital Markets Act...

As its restrictions prevent app developers from steering users to cheaper deals outside the App Store.

Apple said on Monday that the European Commission's decision goes "far beyond what the law requires".

It added that regulators are forcing business terms which are confusing for developers and bad for users.

Last month, Apple overhauled its App Store rules to comply with the EU order to scrap certain curbs on app developers.

That was to avoid daily fines of 5% of its average daily revenue  - or over $58 million a day.

The EU competition watchdog is seeking feedback from app developers before deciding whether to accept the changes or demand more.