Patent Office - The office of the controller general of patents, designs and trademarks.
http://www.patentoffice.nic.in more info...
PatentMatic - Offers a range of information on patent numbering and kind codes.
http://www.patentmatic.com/ more info...
UK Intellectual Property Office - The official government body responsible for granting Intellectual Property (IP) rights in the United Kingdom.
http://www.patent.gov.uk/ more info...