Biotechnology and US patents

http://www.nal.usda.gov/bic/Biotech_Patents

Centre Henri Tudor

http://www.crpht.lu/

CHI Research, Inc.

http://www.chiresearch.com

Data Star

http://www.dialog.com/info/products/datastar-index.shtml

Derwent

http://www.derwent.co.uk

DIALOGWEB

http://dialog.krinfo.com

Fachinformationszentrum Karlsruhe

http://www.fiz-Karlsruhe.de

Faxpat

http://www.faxpatinc.com/ 

Great Lake Patent& Trademark Center

http://www.detroit.lib.mi.us/glptc/ 

Guenther Kehl

http://ourworld.compuserve.com/homepages/kehlpatent/

INFOCO-System

http://www.infoco.dk

IBM Patent Server

http://www.delphion.com/ 

Information Law Alert 

http://infolawalert.com/

Institut National de la Propri Industrielle

http://www.inpi.fr/

Japan Patent Information Organization

http://www.japio.or.jp/welcome.html

Knight Ridder Information

http://www.dialog.com

Lexis-Nexis

http://www.lexis-nexis.com/ 

MicroPatent

http://www.micropat.com

Mogee Research & Analysis Associates

http://www.mogee.com

NRI

http://patent.ne.jp

Patents Information Services-The British Library

http://www.bl.uk

Prous Science

http://www.prous.es

Q-PAT (QUESTEL/ORBIT)

http://www.qpat.com/

Reedfax

http://www.reedfax.com

RWS Information Ltd & RWS Translations Ltd

http://www.polyglot.com/

SCI

http://www.sci3.com/

STO's Internet Patent Search System

http://sunsite.unc.edu/patents/intropat.html

STNEasy

http://stneasy.cas.org/

 SurfIP
- The First Stop, One Stop IP Portal

http://www.SurfIP.com 

The U.S. Patent Citation Database

http://cos.gdb.org/repos/pat/

U.S. Patent Advanced Search

http://www.uspto.gov 

UBC Library Canadian PatentIndex PATSCAN

http://www.library.ubc.ca/patscan/

US Patent Act

http://www.law.cornell.edu/uscode/35/