A 3rd Circuit case at the door of the U.S. Supreme Court will test the federal government’s power to revoke immunity from prosecution granted to antitrust violators who agree to rat on their rivals.

During an Oct. 27 conference, the Court will decide whether to hear Stolt-Nielsen, S.A. v. U.S., 06-97, which would test whether a court can enjoin the Justice Department’s Antitrust Division from withdrawing immunity promised under its Corporate Leniency Program.