Apple's motion to dismiss the U.S. Department of Justice antitrust lawsuit has been rejected, which means a trial that could result in upending more of Apple's businesses will soon begin.

A federal judge on Monday denied Apple's motion to dismiss a major antitrust lawsuit brought by the US government, allowing the case challenging the tech giant's alleged smartphone monopoly to move forward.

The case could be a years-long fight for Apple against enforcers' attempts to lower what they say are barriers to competition with the iPhone.