• The Norwegian Patent Office
• Lawdata (Norwegian Legislation Web site)
• WIPO (Patent Cooperation Treaty)
• PCT Newsletters
• epoline Register Plus (the direct access to all the publicly available information on European patent applications as they pass through the grant procedure of EPO)
• espacenet (world wide data base patent publications)
• USPTO (the US Patent & Trademark Office)
• USPTO PAIR (USPTO's Patent Application Information Retrieval site)