The Supreme Court has its own rules for filing an amicus brief. Most notably, an amicus brief in support of a petition for certiorari is not allowed unless notice was first given to the parties within a short period of time after the filing of the Petition. An amicus brief on the merits, after a petition for certiorari has been granted, does not require prior notice but must be filed within a short period after the side it is supporting filed its brief. | The Supreme Court has its own rules for filing an amicus brief. Most notably, an amicus brief in support of a petition for certiorari is not allowed unless notice was first given to the parties within a short period of time after the filing of the Petition. An amicus brief on the merits, after a petition for certiorari has been granted, does not require prior notice but must be filed within a short period after the side it is supporting filed its brief. |