Atty Moncupa was born in Dinalupihan, Bataan, Philippines on January 14, 1951. He completed his degree in AB Political Science from the University of Sto. Tomas in 1971, earned his Law degree from the Ateneo de Manila University in 1975 and passed the bar examination in 1976. Except for his stint in government as Undersecretary in the Department of Agrarian Reform, Chairman of the Board of Administrators of the Cooperative Development Authority, and Undersecretary in the Department of Transportation and Communications, he has been in active practice since then. His areas of specialization are: Criminal Law and Litigation, Corporate Law, Civil and Commercial Law, Election Law and Human Rights and Civil Rights Law.