NOTICE: Discovery materials will not be disclosed until counsel has entered his or her appearance and has given notice to the District Attorney's Office. Discovery Court Procedures.Discovery Motions are being held IN-PERSON, every Wednesday morning in Courtroom 704, 414 Grant Street, Pittsburgh, Pa 15219. The District Attorney's Office has the ability to provide discovery to the defendants' attorneys either as paper copies or electronically. The attorney for the Commonwealth should not charge the defendant for the costs of copying pretrial discovery materials. The Brady rule, named after Brady v. Maryland, requires prosecutors to disclose material, exculpatory information in the government's possession to the defense. A Brady motion is a defendant's request that the prosecution in a California criminal case turns over any potentially "exculpatory" evidence.