Penal Code § 4852.07
CHAPTER 3.5. Procedure for Restoration of Rights and Application for Pardon
The petitioner shall give notice of the filing and the time of the hearing of the petition at least 30 days before the date set for the hearing to the district attorney of the county in which the petition is filed and to the district attorney of each county in which the petitioner was convicted of a felony or of a crime the accusatory pleading of which was dismissed pursuant to Section 1203.4.