Patent Offices Database

• Canadian Intellectual Property Office - Patent Database
• United States Patent Office - file histories
• United States Patent Office – searchable database
• European Patent Office – File History Access
• WIPO Searchable Database

Canadian Patent Law - Reference Resources 

• Canadian Patent Act
• Canadian Patent Rules
• Guidelines for Patent Examination - MOPOP
• Patent Appeal Board Decisions - Search Utility
• Federal Court of Canada
• Supreme Court of Canada
• Patent Register - Database

United States Patent Law -
Reference Resources 

• Guidelines for Patent Examination - MPEP
• Federal Circuit Decisions
  
• Orange Book Database

European Patent Law -
Reference Resources

• European Patent Convention
• Guidelines for Examination
• Decisions of the Enlarged Board of Appeals

Disclaimer:  The above links are provided as a collection of resources that may be useful.  While all attempts are made to keep these links and resources current, it is possible that more current versions exist.  Provision of these resources is not meant to be a replacement for legal advice as required from a qualified attorney entitled to practise law in the appropriate jurisdiction.