Tips for locating company patents
European Patent Office-ESPACENET
Espacenet offers free access to information about inventions and technical developments from 1782 to today. Espacenet is accessible to beginners and experts and is updated daily. It contains data on more than 110 million patent documents from around the world. Supporting information will help one understand whether a patent has been granted and if it is still in force. ESPACENET Tutorials
Access: Available to everyone
U.S. Patent Trademark Office - USPTO
The United States Patent and Trademark Office (USPTO) is the federal agency for granting U.S. patents and registering trademarks. USPTO tutorials
Access: Available to everyone