A panel of three judges on the U.S. Court of Appeals for D.C. has been assigned to hear the Justice Department's appeal of the AT&T and Time Warner merger.
Oral arguments are expected to take place on December 6th.
The Justice Department sued to block the merger, but a district court judge approved the $85 billion deal in June after a six week trial.
In the appeal, the Justice Department will argue the judge misunderstood "fundamental principles of economics" when making the decision.
As for the three judges selected for the appeal panel, they're Judith Rogers, Robert Wilkins and David Sentelle.
The panel's decision can be appealed to the full court.