US v. Google redux: all the news from the ad tech trial

On April 17th, 2025, Judge Brinkema ruled that Google did act illegally to acquire and maintain monopoly power in online advertising. Now, DOJ and Google lawyers are returning to the courtroom to argue over whether this should lead to a Google breakup by forcing the company to sell its AdX exchange.

In the initial trial, the DOJ argued that Google unfairly locked up the market for ad tech tools that publishers and advertisers rely on to monetize their websites and market their goods. Google responded that it created efficient products that work well for customers and said it faced plenty of competition.

Read on below for all of the updates and notes from the case.

DOJ antitrust chief praises Google ad tech court’s efficiency.

We’re at the courthouse where Google is fighting another break up attempt.

The US government is taking a second stab at breaking up Google

DOJ asks court to split up Google’s ad tech empire

Google is in more danger than ever of being broken up

Google loses ad tech monopoly case

Google and the DOJ make their final arguments in the ad tech monopoly case

Google’s empire is under siege

Tech critics want a Google exec punished for deleted chats

Google is replacing the exec in charge of Search and ads

How Google tried to unravel the DOJ’s ad tech case