A look at the DOJ's and multiple states' antitrust lawsuit against Google's ad business, as its trial is set to begin on September 9 (Jennifer Elias/CNBC)

Jennifer Elias / CNBC:

A look at the DOJ’s and multiple states’ antitrust lawsuit against Google’s ad enterprise, as its trial is set to begin on September 9  —  A month after dropping a landmark antitrust case introduced by the Department of Justice, Google is headed again to court docket to face off for a second time against federal prosecutors.