Madrid Agreement Concerning the International Registration of Marks : of April 14, 1891, as revised at Brussels on December 14, 1900, at Washington on June 2, 1911, at The Hague on November 6, 1925, at London on June 2, 1934, at Nice on June 15, 1957, and at Stockholm on July 14, 1967, and as amended on October 2, 1979 and regulations (as in force since April 1, 1992) : protocol relating to the Madrid Agreement Concerning the International Registration of Marks, adopted at Madrid on June 27, 1989 / [prepared by the International Bureau of the World Intellectual Property Organization].