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

Main text(s) Main text(s) Japanese 特許法 (昭和34年4月13日法律第121号. 最終改正平成2023年07月3)      English Patent Act      

Additional Text(s) WTO Notifications Coversheet (3 text(s)) WTO Notifications Coversheet (3 text(s)) English Patent Act French Loi sur les brevets Spanish Ley de Patentes

Legislation Supersedes (19 text(s)) Supersedes (19 text(s))

• Patent Act (Act No. 121 of April 13, 1959, as amended up to April 1, 2022) (JP256)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to June 21, 2021) (JP247)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to October 1, 2021) (JP250)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to April 1, 2020) (JP234)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to October 1, 2020) (JP237)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to April 1, 2019) (JP225)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to July 1, 2019) (JP228)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 33 of May 30, 2018) (JP218)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to December 30, 2018) (JP219)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 55 of July 10, 2015) (JP206)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 36 of May 14, 2014) (JP198)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 63 of May 13, 2011) (JP177)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 16 of April 18, 2008) (JP101)
• Patent Act (Act No. 121 of 13 April 1959, as amended up to 2006) (JP156)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 75 of June 29, 2005) (JP071)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 79 of June 4, 2004) (JP062)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 47 of May 23, 2003) (JP052)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 220 of December 22, 1999) (JP036)
• Patent Act (Act No. 121 of April 13, 1959, as amended up to Act No. 116 of December 14, 1994) (JP006)

Is superseded by (1 text(s)) Is superseded by (1 text(s))

• Patent Act  (JP274)