UK Intellectual Property Office
http://www.ipo.gov.uk

European Patent Office
http://www.epo.org

Office for Harminisation in the Internal Market (OHIM)
http://oami.europa.eu/ows/rw/pages/index.en.do

United States Patent & Trade Mark Office
http://www.uspto.gov

Chartered Institute of Patent Attorneys (CIPA)
http://www.cipa.org.uk/pages/home

British Inventors Society
http://www.thebis.org/index.php

Business Link
http://www.businesslink.gov.uk

Useful Tools

UKIPO Non Disclosure Agreement (NDA) Advice

http://www.ipo.gov.uk/nda.pdf

Espacenet, Patent Search Engine

http://ep.espacenet.com/