US lawCaliforniaStatutesCode probDivision 6Part 1Chapter 16104Cal. PROB § 6104Cal. PROB § 6104Last amended: 1990Year: 2025Length: 31 wordsOfficial source The execution or revocation of a will or a part of a will is ineffective to the extent the execution or revocation was procured by duress, menace, fraud, or undue influence.PreviousCal. PROB § 6103NextCal. PROB § 6105