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 November 1, 2017), and Administrative Instructions (as in force on April 1, 2018)