Les suivants links peuvent vous aider:
www.preliminarysearch.com;
www.teodoru.com;
www.ipmanageronline.com;
www.liquidator.ro;
www.en.e-translator.ro;
www.brandwatch.ro;
www.oppositionsearch.com;
www.marketwatch.com;
www.lextoria.net;
www.juris.ro;
www.lextoria.com;
http://www.wipo.int/portal/index.html.en - World Intellectual Property Organization;
http://oami.europa.eu/ - OHIM (European Trademark and Design Office);
http://www.boip.int/index.htm - Benelux Trademark and Design Office;
http://www.eapo.org/ - Eurasian Patent Organization / Office (EAPO);
http://www.oapi.cm/ - African Regional Industrial Property Organization (ARIPO);
http://ro.espacenet.com - =brevets roumains accordés ces deux dernières années;
www.depatisnet.de – on peut fait la recherche dabs les données bibliographiques des suivantes collections de documents de brevet : brevet: AT - 1973, CH - 1973, DD - 1973, DE - 1973, EP - 1978, FR - 1973, GB - 1973, JP - 1973, US - 1973, WO – 1978;
http://www.uspto.gov – vérification dans la collection de brevets USA;
http://www.wipo.int/ipdl/en/ - Intellectual Property Digital Library.
