Judge Karlton issued a Rule 17 Subpoena
Which the Government Opposed on October 31, 2011
Attached - Defense's November 1, 2011 Subpoena's which were never answered.
Rule 17 means Judge Karlton signed under SEAL and the Government doesn't get copies of the Subpoenas nor the Responses (even though they did get a copy of the Subpoena via Morningstar).