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 September 28, 1979 : Protocol Relating to the Madrid Agreement Concerning the international registration of marks adopted at Madrid on june 27, 1989, as amended on october 3, 2006 and on november 12, 2007 : regulations (as in force on january 1, 2015) and : Administrative instructions (as in force on january 1, 2008)