4-7. May I file a reply in support of a writ petition? When is the reply due?

A. Reply to Preliminary Opposition. A petitioner may file an optional reply in support of a writ petition after receiving preliminary opposition from the other side. You may serve and file a reply within 10 days after the preliminary opposition is filed. (Rule 8.490(g).) But be aware that the writ panel already may have reached a decision on your writ petition before this time!

B. Reply to Return. You may have a longer period of time to file a reply if the court issues an alternative writ, order to show cause or a "Palma notice" (that the court is considering issuing a peremptory writ in the first instance). The court usually will specify the deadline for such a reply in the alternative writ or order to show cause. If it does not, you have 15 days to serve and file a reply after the return or opposition is filed. (Rule 8.4890(h).)