Comcast Taking Viamedia Antitrust Case to High Court (Corrected)

Comcast Corp. plans to ask the U.S. Supreme Court to shut down an antitrust lawsuit claiming it uses a regional advertising clearinghouse to monopolize “representation services” for coordinating TV ad placements in three cities.

The media giant will file a petition by Sept. 4 seeking high court review of the antitrust lawsuit by rival Viamedia Inc., according to a filing Monday in the U.S. District Court for the Northern District of Illinois.

The case returned to the Chicago federal court for trial-level proceedings after it was revived in February by a divided U.S. Court of Appeals for the Seventh Circuit, ...