Patent Act
During the Meiji era, all governmental systems underwent frequent changes, and the patent law was no exception. The Patent Monopoly Act was replaced by the Patent Act (特許條例 "Tokkyo jōrei") in 1888; the Patent Act was replaced by the Patent Law (特許法 "Tokkyohō") of 1899, which was completely revised in 1909. After the Meiji era, the Patent Act was completely revised twice, in 1921 and 1959.