Dale Cregan has pleaded not guilty to murdering Fiona Bone and Nicola Hughes in a gun and grenade attack.
The officers were killed on the morning of 18 September as they responded to a report of a burglary in Hattersley, Greater Manchester.
Appearing via a video link at Liverpool Crown Court on Monday, Cregan also denied the murders of two other men.
The 29-year-old is charged with four counts of murder and attempted murder and causing an explosion with a grenade.
Nine other men appeared from Manchester and Wakefield prison via video link.
Relatives of both Fiona Bone and Nicola Hughes also attended the hearing.
A trial date has been set for 4 February 2013 at Preston Crown Court.