Weeks after a judge ruled the company stifled the competition in search, another trial opens on its ad-tech practices.

The tech giant has lost a series of legal fights that investors have largely shrugged off. But a new trial over its advertising business could carry big consequences.

Google’s latest antitrust trial began Monday. It’s the tech giant’s second turn in the courtroom this year, and this time the issue at stake is its sprawling ad business.

Google will be in court on Monday to face allegations of an ad tech monopoly. Experts say that a DOJ win could create a better browsing future.

Alphabet Inc.’s Google headed back to court Monday to face US Justice Department allegations that it manipulates the $677 billion display advertising market in violation of antitrust laws, just one month after losing a landmark ruling that it illegally dominates online search.

The Justice Department says Google has a monopoly in ad tech, while the FTC says a merger of two fashion houses will raise prices.

Google faces yet another antitrust lawsuit in the US after a major defeat over its search engine dominance in August.

Google faces its second major antitrust trial in less than a year on Monday, with the US government accusing the tech giant of dominating online advertising and stifling competition.