Does one need a shibboleth?
A coram nobis petition applies to persons who have already been convicted of a crime and have served their sentence. It may seek to remove probation requirements or restrictions, eliminate payment or obtain refund of court imposed fines, restore voting rights and gun ownership, improve employment and credit potential, remove a public stigma, and so forth, in order to restore, so far as possible, the erroneously convicted party to a pre-conviction state.
Coram non judice, Latin for "before one who is not a judge," is a legal term typically used to indicate a legal proceeding without a judge, with improper venue, or without jurisdiction.
