全球專利搜尋網

Delphion Intellectual Property Network
www.delphion.com  

United States Patent Trademark Office (USPTO)
www.uspto.gov/patft/index.html


The European Patent Office (EPO Patent Search) 
http://ep.espacenet.com

LII Collection Historic Supreme Court
www2.law.cornell.edu/cgi-bin/foliocgi.exe/historic/query=?realquerydlg

US Court of Appeals, Federal Circuit
www.law.emory.edu/fedcircuit/

Find Law
www.findlaw.com/casecode/courts/fed.html

World Intellectual Property Organizaton (WIPO)
www.wipo.org
European Patent Office
www.european-patent-office.org/   

Asia-Pacific Industrial Property Center (APIC) 
www.apic.jiii.or.jp

Austria www.patent.bmwa.gv.at

Australia www.ipaustralia.gov.au/

Brazil http://www.inpi.gov.br

China www.cpo.cn.net

Canada http://opic.gc.ca

Finland www.prh.fi 

Greece www.european-patent-office.org/patlib/country/greece/index.htm

German www.deutsches-patentamt.de

Italy www.european-patent-office.org/it/

Japan www.jpo.go.jp

Korea www.kipo.go.kr

Malaysia www.minds.org.my

Netherlands www.bie.minez.nl/ 

Portugal www.inpi.pt

Romania www.osim.ro

Sweden www.pre.se

Slovenia www.sipo.mzt.si

Spain www.oepm.es. 

R.O.C. Taiwan http://www.tipo.gov.tw/default.asp

United Kingdom www.ukpats.org.uk
http://ep.espacenet.com/
http://patft.uspto.gov/netahtml/

Patent Search sites
http://ep.espacenet.com/
http://patft.uspto.gov/netahtml/

http://www.freepatentsonline.com/