A litigant is generally entitled to file court documents at their discretion. That is, the litigant does not need pre-approval to file a complaint, petition, objection, etc. from a third-party. However, for an unlucky subset of litigants, they do need pre-approval to file because they have been declared a vexatious litigant.
An unpublished appellate opinion described the rationale behind the vexatious litigant law:
"`The vexatious litigant statute (§ 391 et seq.) was enacted "`to curb misuse of the court system'" by "`persistent and obsessive' litigants." [Citation.]' [Citation.] Relevant here, a "`[v]exatious litigant'" is one who, proceeding in propria persona, . . . `repeatedly files unmeritorious motions, pleadings, or other papers, conducts unnecessary discovery, or engages in other tactics that are frivolous or solely intended to cause unnecessary delay' (inter alia)." (Deal, supra, 45 Cal.App.5th at p. 618.)
"`A court exercises its discretion in determining whether a person is a vexatious litigant'" based on statutory criteria. (Deal, supra, 45 Cal.App.5th at p. 621; see § 391, subd. (b).) "Once a person has been declared a vexatious litigant, the court, on its own or a party's motion, may `enter a prefiling order which prohibits [the person] from filing any new litigation in the courts of this state in propria persona without first obtaining leave of the presiding judge of the court where the litigation is proposed to be filed.'" (Shalant v. Girardi (2011) 51 Cal.4th 1164, 1170; see § 391.7.)
This unpublished appellate opinion also described how a party had been declared a vexatious litigant by a trial court:
"After a continued hearing, at which all parties had the opportunity to orally present their positions, the temporary judge hearing the motion issued an order granting respondents' motion. The written ruling listed roughly four dozen court filings by appellant since the time of the ruling on the first vexatious litigant motion, and it described them as "repetitive," "difficult to decipher," and unsuccessful. Based on appellant's actions of "repeatedly fil[ing] unmeritorious motions, pleadings, or other papers," the court found appellant to be a vexatious litigant and issued a prefiling order "prohibit[ing] [him] from filing any new litigation in the courts of this state in propria persona . . . without first obtaining leave of the presiding justice or presiding judge of the court where the litigation is proposed to be filed."
The appellate court affirmed the the trial court's vexatious litigant determination.
Elias v. Jensen, Orange County Superior Court case no. 30-2018-00980796