From an AP story by Michael Liedtke headlined “Google’s search engine dominance is at the center of the biggest US antitrust trial in decades”:

The U.S. government is taking aim at what has been an indomitable empire: Google’s ubiquitous search engine that has become the internet’s main gateway.

The legal attack will swing into full force Tuesday in a Washington D.C. federal courtroom that will serve as the battleground for the biggest U.S. antitrust trial since regulators went after Microsoft and its dominance of personal computer software a quarter century ago.