Certiorari 3 Republic of the Philippines vs. Court of Appeals and Traders Royal Bank Jan 18, 2000 National Irrigation Administration vs. Court of Appeals Nov 17, 1999 Dra. Brigida S. Buenaseda, et al. vs. Secretary Juan Flavier, Ombudsman Conrado M. Vasquez, and NCMH Nurses Association Sep 21, 1993