The U.S. Department of Justice and eight states, together with California, filed go well with in opposition to Google in a Virginia federal courtroom on Tuesday, claiming that the corporate illegally used its market powers to dominate Internet promoting.

In a court filing initially reported on by CNN, the DOJ and the states requested the courtroom to, “at minimum,” power Google to divest itself of its Google Ad Manager suite—together with each Google’s writer advert server, DFP, and Google’s advert trade, AdX—plus any further structural aid that the courtroom deemed mandatory.

Google referred to as the go well with “an attempt to pick winners and losers” by the DOJ.

The 149-page go well with accuses Google of utilizing its affect to take away competitors from the advert tech market. The DOJ claimed, for instance, that Google retains about 30 cents of every advert tech greenback that flows by from an advertiser to a writer.

“The harm is clear: website creators earn less, and advertisers pay more, than they would in a market where unfettered competitive pressure could discipline prices and lead to more innovative ad tech tools that would ultimately result in higher quality and lower cost transactions for market participants,” the go well with claims. “And this conduct hurts all of us because, as publishers make less money from advertisements, fewer publishers are able to offer internet content without subscriptions, paywalls, or alternative forms of monetization.”

The go well with alleges that Google basically purchased itself management over Web promoting from each a writer and advetiser perspective through its 2008 buy of DoubleClick, which gave it each entry to an advert trade (AdX), in addition to a writer advert server, often called a DFP. “In effect, Google positioned itself to function simultaneously as buyer, seller, and auctioneer of digital display advertising,” the go well with alleges.

Though the go well with dives deep into the intracacies of the advert enterprise, the go well with claims that on one hand Google was artificially inflating the costs of the adverts to the advantage of publishers. But the go well with additionally harmed publishers as effectively, as Google Ads drove out different competitors. If that they had remained available in the market, the extra competitors might have benefited the market. The go well with claims that by 2015, Google owned 90 % of the internet marketing market.

Other makes an attempt by advertisers to wrest again management, reminiscent of yield managers and header bidding, have been additionally foiled, the go well with says.

Google’s assertion referred to as the go well with a “flawed argument.”

“Today’s lawsuit from the DOJ attempts to pick winners and losers in the highly competitive advertising technology sector,” the corporate stated in an announcement. “It largely duplicates an unfounded lawsuit by the Texas Attorney General, much of which was recently dismissed by a federal court. DOJ is doubling down on a flawed argument that would slow innovation, raise advertising fees, and make it harder for thousands of small businesses and publishers to grow.”