Professional Bodies

Chartered Institute of Patent Attorneys
Institute of Trade Mark Attorneys
Institute of Professional Representatives before the European Patent Office

Law-Making Bodies and Official Institutions

Design Council
European Patent Office
The Office of Public Sector Information
OHIM (The Community Trade Mark Office)
WIPO (World Intellectual Property Organization)

General Resources

European Patent Convention
Ancillary Regulations to the European Patent Convention
International Classification of Goods and Services for the Purposes of the Registration of Marks under the Nice Agreement (8th edition, WIPO website)
International Patent Classification (7th edition, WIPO website)
Madrid System for the International Registration of Marks
Paris Convention