Patent and Trademark Information Country Wise
Indian Patent Design & Trademark Offices
Patents database (CSIR-India)
( Patents database is a collaborative effort between Intellectual Property Management Division of CSIR, Patent Inspection Center at NCL Library and URDIP)
European (EP) Patents
U S Patent Databases(Full text and Bibliographic:1976-Till date)
Patents Related Sites through Stanford University
( U.S Patenet Office, IBM Patents Server, European Patents 
Server, Questal/Orbit Patent and Trademark www Server etc)
PCT (WO) Patents
IBM Patents Database
Micropatent Patent Services
Derwent Patent Information
World Wide Patents
Austria (German)
Canadian Patents
Finland (Finnish)
France (French)
Germany (German)
Liechtenstein (French, German, Italian)
Monaco (French)
Switzerland (French, German, Italian)
United Kingdom (English)