Links to patent information

The listing of sites here does not imply endorsement by TWI, or that they are the best sources of information. The list is updated and links are checked periodically.

• World Intellectual Property Organization
  
  
• European Patent Office. Patent searching is available via Esp@cenet.
  
  
• United States Patent and Trademark Office
  
  
• SurfIP
  
  
• Canadian Patents Database
  
  
• Japan Patent Office
  
  
• Deutsches Patent- und Markenamt
  
  
• UK Patent Office
  
  
• MicroPatent
  
  
• Thomson Reuters Intellectual Property
  
  
• The British Library
  
  
• Questel
  
  
• Patent Information Users Group
  
  

[last looked at on 5 July 2010]

If these links fail, or you know of one that ought to be included, please inform Margaret Connell BSc, Information Officer at TWI (The Welding Institute); margaret.connell@twi.co.uk.