California practitioners generally know that they cannot cite or rely upon unpublished or depublished California opinions in California courts, except when relevant to law of the case, res judicata, etc.  (Cal. Rules of Court, Rule 8.1115(a).)  Violations of the “no-citation rule” can even be sanctionable. (People v. Williams (2009) 176 Cal.App.4th 1521, 1529; Alicia T. v. County of Los Angeles (1990) 222 Cal.App.3d 869, 885-886.)

Recently, though, there has been an underground debate as to whether the judicial notice statute, Evid. Code, § 452(d)(1), might trump Rule 8.1115. (See Gilbert v. Master Washer & Stamping Co. (2001) 87 Cal.App.4th 212, 218, fn. 14; Rafi Moghadam, Judge Nullification: A Perception of Unpublished Opinions (2011) 62 Hastings L.J. 1397; Scott Talkov, Citing Unpublished Opinions: The Conflict Between the No-Citation Rule and Judicial Notice, California Litigation Attorney Blog.)