(a) The grounds for a motion to strike shall appear on the face of the challenged pleading or from any matter of which the court is required to take judicial notice. (b) Where the motion to strike is based on matter of which the court may take judicial notice pursuant to Section 452 or 453 of the Evidence Code, such matter shall be specified in the notice of motion, or in the supporting points and authorities, except as the court may otherwise permit. Ca. Civ. Proc. Code § 437 Added by Stats. 1982
(a) A material allegation in a pleading is one essential to the claim or defense and which could not be stricken from the pleading without leaving it insufficient as to that claim or defense. (b) An immaterial allegation in a pleading is any of the following: (1) An allegation that is not essential to the statement of a claim or defense. (2) An allegation that is neither pertinent to nor supported by an otherwise sufficient claim or defense. (3) A demand for judgment requesting relief not supported