Info brevetti
Brivit database
Canadian Intellectual Property Office patent databases
Centro de Innovación e Transferencia de Tecnoloxía (Santiago de Compostella)
Delphion Intellectual Property Network
Dialog
esp@cenet
European Coating Patents Database
Fachinformationszentrum Karlsruhe (STN)
IFI CLAIMS Patent Services
Intellectual Property Digital Library
International Patent Classification
ipr-village
Jiangxi information institute of science and technology, Nanchang, CHINA
Lexis-Nexis
MicroPatent PatSearch
TM
FullText
On-line Data Collections hosted by WIPO
PAT plus
Patent Cooperation Treaty Database
Patnet
PCT-Gazette
Q-PAT (QUESTEL.ORBIT)
Questel.Orbit
Registro dell'Istituto Federale della PI svizzero
Ricerche tra domini
Ricerche tra i DOMINI italiani (Whois)
surfIP.com: Intellectual Property Office of Singapore portal
The European Patent Office Esp@cenet
Trademark Database Portal
UAMI databases
Univentio
US Patent and Trademark Office Web Server
US Patent Bibliographic Data
