California Code, Government Code - GOV § 12656

(a) If a violation of this article is alleged or the application or construction of this article is in issue in any proceeding in the Supreme Court of California, a state court of appeal, or the appellate division of a superior court, the person or political subdivision that commenced that proceeding shall serve a copy of the notice or petition initiating the proceeding, and a copy of each paper, including briefs, that the person or political subdivision files in the proceeding within three days of the filing, on the Attorney General, directed to the attention of the False Claims Section in Sacramento, California.

(b) Timely compliance with the three-day time period is a jurisdictional prerequisite to the entry of judgment, order, or decision construing or applying this article by the court in which the proceeding occurs, except that within that three-day period or thereafter, the time for compliance may be extended by the court for good cause.

(c) The court shall extend the time period within which the Attorney General is permitted to respond to an action subject to this section by at least the same period of time granted for good cause pursuant to subdivision (b) to the person or political subdivision that commenced the proceeding.