on August 14, 1885. The patent granted to him was for an anticorrosive paint containing lacquer, which effectively protected ship bottoms from corrosion. In 1978, Japan acceded to the Patent Cooperation Treaty (PCT). In 1980, the JPO adopted the International Patent Classification, discarding its own patent classification. In 1989 the JPO moved into its current headquarters in Kasumigaseki. International cooperation The JPO cooperates with the United States Patent and Trademark Office (USPTO) and the European Patent Office (EPO) as one of the Trilateral Patent Offices. It is also part of the IP5 along with the USPTO, EPO, the Korean Intellectual Property Office (KIPO), and China's State Intellectual Property Office (SIPO). The JPO, SIPO and KIPO are referred to as "Asian Trilateral Offices". See also Japanese patent law Japanese trademark law Intellectual Property High Court F-term, a patent classification used by JPO Japan Intellectual Property Association (JIPA) References External links Japan Patent Office 1885 establishments in Japan Government agencies established in 1885 Patent Office Intellectual property organizations Patent Office Patent offices International Searching and Preliminary Examining Authorities