US Patent Office

www.uspto.gov

US Copyright Office

www.copyright.gov                                                        

US Trademark Office

www.uspto.gov/trademarks                                       

Google Patent      

patents.google.com

International Patent System

www.wipo.int/pct/en/

Business entity search CA SOS

bizfileonline.sos.ca.gov/search/business               

Business entity search Delaware SOS

icis.corp.delaware.gov/Ecorp/EntitySearch/NameSearch.aspx

Glossary of patent law terms

en.wikipedia.org/wiki/Glossary_of_patent_law_terms