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What is prior art and why search prior art
When and where to search prior art
How to search prior art
From whom you can get prior art search service
links of Patent offices & database
How to use our service


 
The World Intellectual Property Organization (WIPO)
The United States Patent and Trademark Office (USPTO)
European Patent Office (EPO)
The Japanese Patent Office (JPO)
The Canadian Intellectual Property Office (CIPO)
The State Intellectual Property Office of P.R.China (SIPO)

 
- Derwent
- Patolis
- Dialog
- Delphion
- Brandy (Japanese trademark database)
- Trilateral Web Site, cooperated by EPO, JPO, USPTO


 
- Chemical Abstracts Service (CAS)
- JST Online Information System (JOIS) (Japanese)
- ScienceDirect
- STN International


 
- MedlinePro, search service for medical and health professionals
- Cambridge Scientific Abstracts
- List of Japanese Databases operated by JOIS (Japanese)
- Biglobe database service (Japanese)
- Databases and the World Wide Web (Issues about connecting a PC-based database to the Web)
- Database Resources