The complaint names only Google as the defendant, and not any individuals.
It also calls for Google to sell part of its ad tech business.
The case is the newest example of government efforts to rein in Big Tech.
Google rejected the allegations.
The Justice Department didn’t respond to a request for comment.
It comes as governments around the world are looking to curb Big Tech.
Kanter also alleged Google’s behavior harmed the US government and military.
CNET’s Stephen Shankland contributed to this report.
