MO HB335

Defines "vexatious litigant" as a pro se plaintiff who has filed at least 5 unsuccessful or stalled litigations in the preceding 7 years, repeatedly relitigates settled matters, files frivolous motions, or has been previously declared vexatious by another court

Allows defendants to motion for dismissal or require the plaintiff to furnish security (including attorney's fees) if the court finds the plaintiff is a vexatious litigant with no reasonable probability of prevailing

Authorizes courts to enter prefiling orders prohibiting vexatious litigants from filing new pro se litigation without first obtaining permission from the presiding judge, with violations punishable as contempt of court

Requires the state courts administrator to maintain and annually distribute to all court clerks a list of vexatious litigants subject to prefiling orders

Permits vexatious litigants to apply to vacate a prefiling order by demonstrating a material change in facts, but limits denied applicants to filing no more than once per year