Fullformexpand.com, 2026. "OPAP." Accessed February 24, 2026. https://www.fullformexpand.com/opap/office-of-patent-application-processing.
"OPAP." (n.d.). Fullformexpand.com. Retrieved February 24, 2026, from https://www.fullformexpand.com/opap/office-of-patent-application-processing.
OPAP. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/opap/office-of-patent-application-processing (Accessed: 24 February 2026).