A1-4 JAPAN is a member of the following international treaties:
- Convention Establishing WIPO
- Paris Convention for the Protection of Industrial Property
- Patent Cooperation Treaty
- Strasbourg Agreement Concerning the International Patent Classification
- Budapest Treaty on the International Recognition of the Deposit Microorganisms for the Purpose of Patent Procedure
- WTO Agreement of Trade Related Aspects of Intellectual Property Rights, including Trade in Counterfeit Goods
- Nice Agreement Concerning the International Classification of Goods and Services for the Purposes of Registration of Marks
- Trademark Law Treaty
- Protocol Relating to the Madrid Agreement Concerning the International Registration of Marks