Under CCP 425.16(f), an Anti-SLAPP motion to strike must be brought within 60 days of service of the complaint unless the court in its discretion and on terms it deems just permits a later filing.  This decision holds that an anti-SLAPP motion is untimely if not filed within 60 days of service of the first complaint that pleads a cause of action coming within anti-SLAPP protection unless the trial court, in its discretion and upon terms it deems proper, permits the motion to be filed at a later time.  However, if the amended complaint alleges a new cause of action, even if based on the same protected act as the prior claims, an Anti-SLAPP motion may be brought within 60 days of service of the amended complaint as to the new cause of action.

California Supreme Court (Chin, J.); March 22, 2018; 2018 WL 1415578