California Code, Code of Civil Procedure - CCP § 2023.050

(a) Notwithstanding any other law, and in addition to any other sanctions imposed pursuant to this chapter, a court shall impose a two hundred and fifty dollar ($250) sanction, payable to the requesting party, upon a party, person, or attorney if, upon reviewing a request for a sanction made pursuant to Section 2023.040, the court finds any of the following:

(b) Notwithstanding paragraph (3) of subdivision (o) of Section 6068 of the Business and Professions Code, the court may, in its discretion, require an attorney who is sanctioned pursuant to subdivision (a) to report the sanction, in writing, to the State Bar within 30 days of the imposition of the sanction.

(c) The court may excuse the imposition of the sanction required by subdivision (a) if the court makes written findings that the one subject to the sanction acted with substantial justification or that other circumstances make the imposition of the sanction unjust.

(d) Sanctions pursuant to this section shall be imposed only after notice to the party, person, or attorney against whom the sanction is proposed to be imposed and opportunity for that party, person, or attorney to be heard.

(e) For purposes of this section, there is a rebuttable presumption that a natural person acted in good faith if that person was not represented by an attorney in the action at the time the conduct that is sanctionable under subdivision (a) occurred. This presumption may only be overcome by clear and convincing evidence.