American Patent & Trademark Law Centre
http://www.patentpending.com

Australian Patent Office
http://www.ipaustralia.gov.au

Austrian Patent Office
http://www.patent.bmwa.gv.at

Belgian Patent Office
http://www.european-patent-office.org/patlib/country/belgium /index.htm

Brazilian Institute of Intellectual Property
http://www.inpi.gov.br

Canadian Intellectual Property Office
http://cipo.gc.ca

Croatian Patent Office
http://pubwww.srce.hr

Czech Industrial Property Office
http://www.upv.cz

Danish Patent and TrademarkOffice
http://www.dkpto.dk

European Patent Office
http://www.european-patent-office.org

Finland National Board of Patents and Registration
http://www.prh.fi/engl.html

France Patent Office
http://www.inpi.fr

Georgian Intellectual Property Organization
http://www.global-erty.net/saqpatenti/

German Patent Office
http://www.patent-und-markenamt.de

Greek Industrial Property Organization
http://www.obi.gr/mainen.htm

Hong Kong Intellectual Property Department
http://info.gov.hk/ipd/

Hungarian Patent Office
http://www.hpo.hu

Indonesia Patent Directorate
http://www.patent.gov.id

Italian Patent and Trademark Office
http://www.minindustria.it

Japanese Patent Office
http://www.jpo-miti.go.jp

Korean Industrial Property Office
http://www.kipo.go.kr/english/index-e.html

Luxembourg Patent Office
http://www.etat.lu/EC/

Malaysian Intellectual Property Division
http://kpdnhq.gov.my/ip/

Maracas Patent Office
http://www.oepm.es

Monaco Patent Office
http://www.european-patent-office.org/patlib/country/monaco /index.htm

Netherlands Patent Office
http://www.bie.nl/index1.htm

New Zealand Patent Office
http://www.moc.govt.nz

People's Republic of China Patent Office
http://www.cpo.cn.net/english.htm

Peruvian Intellectual Property Office
http://ekeko.rep.net.pe/INDECOPI/indecopi.htm

Polish Patent Office
http://saturn.ci.uw.edu.pl/up/

Portuguese Patent Office
http://www.inpi.pt

Republic of Moldova State Agency on I P Protection
http://www.eri.md/Agentii/AGEPI/index.htm

Republic of Lithuania The State Patent Office
http://www.is.lt/vpb/engl/

Republic of Slovak Industrial Property Office
http://www.indprop.gov.sk/english/a-uvod.html

Romanian State Office for Inventions and Trademarks
http://www.osim.ro

Singapore Registry of Trademarks and Patents
http://www.gov.sg/molaw/rtmp/RTMP.html

Slovenian Intellectual Property Office
http://www.sipo.mzt.si

Swedish Patent and Registration Office
http://www.prv.se

Swiss Federal Institute of Intellectual Property
http://www.ige.ch/English/Eoverview.htm

United Kingdom Patent Office
http://www.patent.gov.uk

United States Patent and Trademark Office
http://www.uspto.gov

World Intellectual Property Organization (WIPO)
http://www.wipo.int/eng/main.htm

WIPO Arbitration and Mediation Centre
http://www.wipo.org/eng/general/arbit.htm

Patent Cooperation Treaty Special Programs Office
http://www.uspto.gov/web/offices/pac/dapps/pct/index.html