About Intellectual Property IP Training Respect for IP IP Outreach IP for… IP and... IP in... Patent & Technology Information Trademark Information Industrial Design Information Geographical Indication Information Plant Variety Information (UPOV) IP Laws, Treaties & Judgements IP Resources IP Reports Patent Protection Trademark Protection Industrial Design Protection Geographical Indication Protection Plant Variety Protection (UPOV) IP Dispute Resolution IP Office Business Solutions Paying for IP Services Negotiation & Decision-Making Development Cooperation Innovation Support Public-Private Partnerships AI Tools & Services The Organization Working with WIPO Accountability Patents Trademarks Industrial Designs Geographical Indications Copyright Trade Secrets WIPO Academy Workshops & Seminars IP Enforcement WIPO ALERT Raising Awareness World IP Day WIPO Magazine Case Studies & Success Stories IP News WIPO Awards Business Universities Indigenous Peoples Judiciaries Genetic Resources, Traditional Knowledge and Traditional Cultural Expressions Economics Gender Equality Global Health Climate Change Competition Policy Sustainable Development Goals Frontier Technologies Mobile Applications Sports Tourism PATENTSCOPE Patent Analytics International Patent Classification ARDI – Research for Innovation ASPI – Specialized Patent Information Global Brand Database Madrid Monitor Article 6ter Express Database Nice Classification Vienna Classification Global Design Database International Designs Bulletin Hague Express Database Locarno Classification Lisbon Express Database Global Brand Database for GIs PLUTO Plant Variety Database GENIE Database WIPO-Administered Treaties WIPO Lex - IP Laws, Treaties & Judgments WIPO Standards IP Statistics WIPO Pearl (Terminology) WIPO Publications Country IP Profiles WIPO Knowledge Center WIPO Technology Trends Global Innovation Index World Intellectual Property Report PCT – The International Patent System ePCT Budapest – The International Microorganism Deposit System Madrid – The International Trademark System eMadrid Article 6ter (armorial bearings, flags, state emblems) Hague – The International Design System eHague Lisbon – The International System of Appellations of Origin and Geographical Indications eLisbon UPOV PRISMA UPOV e-PVP Administration UPOV e-PVP DUS Exchange Mediation Arbitration Expert Determination Domain Name Disputes Centralized Access to Search and Examination (CASE) Digital Access Service (DAS) WIPO Pay Current Account at WIPO WIPO Assemblies Standing Committees Calendar of Meetings WIPO Webcast WIPO Official Documents Development Agenda Technical Assistance IP Training Institutions COVID-19 Support National IP Strategies Policy & Legislative Advice Cooperation Hub Technology and Innovation Support Centers (TISC) Technology Transfer Inventor Assistance Program WIPO GREEN WIPO's Pat-INFORMED Accessible Books Consortium WIPO for Creators WIPO Translate Speech-to-Text Classification Assistant Member States Observers Director General Activities by Unit External Offices Job Vacancies Procurement Results & Budget Financial Reporting Oversight
Arabic English Spanish French Russian Chinese
Laws Treaties Judgments Browse By Jurisdiction

WIPO-Administered Treaties

Export to Excel Contracting Parties Paris Convention Washington Act (1911) (Total Members: 36)
Member Signature Instrument In Force Details
Australia
Accession: July 30, 1925
October 10, 1925
Accession to the Washington Act (1911) for the Territory of Papua and the Mandate territory of New Guinea: February 25, 1926; Entry into force: April 13, 1926. (see La Propriété Industrielle 1926, No.3, p.49)
Austria
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Belgium
June 2, 1911
Accession: July 8, 1914
August 8, 1914
Brazil
June 2, 1911
Accession: November 17, 1914
December 17, 1914
Bulgaria
Accession: April 30, 1921
June 13, 1921
Canada
Accession: August 21, 1923
September 1, 1923
Cuba
June 2, 1911
Accession: November 22, 1921
January 3, 1922
Denmark
June 2, 1911
Accession: July 30, 1914
August 30, 1914
Accession to the Washington Act (1911) included the Faroe Islands. (see La Propriété Industrielle 1914, No.9, p.125)
Dominican Republic
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Estonia
Accession: December 18, 1923
February 12, 1924
Finland
Accession: August 2, 1921
September 20, 1921
France
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Ratification of the Washington Act (1911) included Algeria and colonies. (see La Propriété Industrielle 1914, No.1, p.1)
Germany
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Accession to the Washington Act (1911) for Colonies: September 18, 1914; Entry into force: May 1, 1913. (see La Propriété Industrielle 1914, No.9, p.125)
Greece
Accession: August 18, 1924
October 2, 1924
Hungary
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Ireland
Accession: October 22, 1925
December 4, 1925
Italy
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Japan
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Latvia
Accession: July 6, 1925
August 20, 1925
Lebanon
Accession: June 18, 1924
September 1, 1924
Accession to the Washington Act (1911) through France.
Luxembourg
Accession: May 12, 1922
June 30, 1922
Mexico
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Morocco
Accession: February 27, 1917
July 30, 1917
Netherlands (Kingdom of the)
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Ratification of the Washington Act (1911) included the Dutch East Indies, Suriname and Curaçao. (see La Propriété Industrielle 1914, No.1, p.1)
Norway
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Poland
Accession: June 24, 1919
November 10, 1919
Portugal
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Romania
Accession: August 26, 1920
October 6, 1920
Spain
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Accession to the Washington Act (1911) for the Spanish zone of Morocco: May 8, 1928; Entry into force: July 27, 1928. (see La Propriété Industrielle 1928, No.7, p.145)
Sweden
June 2, 1911
Accession: November 21, 1916
January 11, 1917
Switzerland
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Syrian Arab Republic
Accession: June 18, 1924
September 1, 1924
Accession to the Washington Act (1911) through France.
Tunisia
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Türkiye
Accession: August 6, 1925
October 10, 1925
United Kingdom
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Accession to the Washington Act (1911) for Ceylon, New Zealand and Trinidad and Tobago: May 20, 1913; Entry into force: June 20, 1913. (see La Propriété Industrielle 1913, No.5, p.66)
United States of America
June 2, 1911
Ratification: April 1, 1913
May 1, 1913
Extension of application of the Washington Act (1911) to Puerto Rico, the Virgin Islands, Samoa and Guam: March 5, 1963; Entry into force July 7, 1963. (see Industrial Property 1963, No.6, p.118)