The Korean Intellectual Property Office (KIPO) first began work as an international searching authority (ISA) and an international preliminary examining authority (IPEA) in December 1999. In the years following, KIPO was selected as a competent ISA and IPEA by several countries, including the US in 2006. KIPO became only the second foreign patent office (following the EPO) qualified to act as both an ISA and IPEA for US international applications, which could be interpreted as international recognition of KIPO's search and examination quality.