Before dismissing a successive petition under Penal Code section 1509(d), a superior court must provide notice to the petitioner and an opportunity to respond.

The superior court must grant or deny a certificate of appealability concurrently with the issuance of its decision denying relief on a successive death penalty- related habeas corpus petition. Before issuing its decision, the superior court may order the parties to submit arguments on whether a certificate of appealability should be granted. If the superior court grants a certificate of appealability, the certificate must identify the substantial claim or claims for relief shown by the petitioner and the substantial claim that the requirements of Penal Code section 1509(d) have been met. The superior court clerk must send a copy of the certificate to the petitioner, the Attorney General, the district attorney, the clerk/executive officer of the Court of Appeal and the district appellate project for the appellate district in which the superior court is located, the assisting counsel or entity, and the clerk/executive officer of the Supreme Court. The superior court clerk must send the certificate of appealability to the Court of Appeal when it sends the notice of appeal under rule 8.392(c).