Patent Offices
Japan (JPO)
USA (USPTO)
Europe (EPO)
South Korea (KIPO)
China (CNIPA)
Taiwan (TIPO)
World Intellectual Property Organization (WIPO)
Databases
J-platpat
Patent Center
Public PAIR
Patent Scope
Espacenet
Espacenet（classic）
Courts
Tokyo District Court Intellectual Property Department
Intellectual Property High Court
Search for courts and intellectual property rights case
Others
Japan Patent Attorneys Association (JPAA)
National Center for Industrial Property Information and Training (INPIT)
International Association for the Protection of Intellectual Property (AIPPI)