A motion to strike is filed in connection with a demurrer when it is necessary to strike a portion of a cause of action. A motion to strike is used to carve out parts of a lawsuit that are not appropriate.For example, there might be an an unsupported claim for attorney fees. Demurrer Without Motion To Strike. Motion. Cal. Super. The notice of motion to strike shall specify a hearing date set in accordance with Section 1005. A Motion to Strike is similar to a Demurrer, in that it challenges defects in the complaint. However, the two pleadings challenge different types of defects. A motion to strike is similar to a demurrer, but it relates to only specific parts of a complaint. Motion To Strike Not Antislapp Without Demurrer. Motion. Cal. Super. For example, a motion to preclude asks the court to ban the testimony or evidence from being used in the case.