Here is the section relating to the unsealing. Apparently Obama has not been served yet and the court has not decided if the case is good or not per this:
(2) A copy of the complaint and written disclosure of substantially all material evidence and information the person possesses shall be served on the Government pursuant to Rule 4(d)(4) of the Federal Rules of Civil Procedure. The complaint shall be filed in camera, shall remain under seal for at least 60 days, and shall not be served on the defendant until the court so orders. The Government may elect to intervene and proceed with the action within 60 days after it receives both the complaint and the material evidence and information.
(3) The Government may, for good cause shown, move the court for extensions of the time during which the complaint remains under seal under paragraph (2). Any such motions may be supported by affidavits or other submissions in camera. The defendant shall not be required to respond to any complaint filed under this section until 20 days after the complaint is unsealed and served upon the defendant pursuant to Rule 4 of the Federal Rules of Civil Procedure.
(4) Before the expiration of the 60-day period or any extensions obtained under paragraph (3), the Government shall—
(A) proceed with the action, in which case the action shall be conducted by the Government; or
(B) notify the court that it declines to take over the action, in which case the person bringing the action shall have the right to conduct the action.
(5) When a person brings an action under this subsection, no person other than the Government may intervene or bring a related action based on the facts underlying the pending action.
§ 3733. Civil investigative demands
(a) In General.—
(1) Issuance and service.— Whenever the Attorney General has reason to believe that any person may be in possession, custody, or control of any documentary material or information relevant to a false claims law investigation, the Attorney General may, before commencing a civil proceeding under section 3730 or other false claims law, issue in writing and cause to be served upon such person, a civil investigative demand requiring such person—
(A) to produce such documentary material for inspection and copying,
(B) to answer in writing written interrogatories with respect to such documentary material or information,
(C) to give oral testimony concerning such documentary material or information, or
(D) to furnish any combination of such material, answers, or testimony.
The Attorney General may not delegate the authority to issue civil investigative demands under this subsection. Whenever a civil investigative demand is an express demand for any product of discovery, the Attorney General, the Deputy Attorney General, or an Assistant Attorney General shall cause to be served, in any manner authorized by this section, a copy of such demand upon the person from whom the discovery was obtained and shall notify the person to whom such demand is issued of the date on which such copy was served.
http://www.law.cornell.edu/uscode/31/usc_sec_31_00003733----000-.html