IP Bar Associations:
American Bar Association -IP Section
American Intellectual Property Law Association
Intellectual Property Owners Association
International Federation of Intellectual Property Lawyers
Association of Patent Law Firms
Chartered Institute of Patent Agents
National Association of Patent Practitioners

Copyrights:
Library of Congress Copyright Office
The Copyright Clearance Center On-Line (CCC)
Copyright Society of the United States of America

Trademark and Domain Names:
United States Patent & Trademark Office (Trademark Page)
International Trademark Association
Internet Corporation for Assigned Names and Numbers (ICANN)

Licensing, Technology Transfer and Commercialization:
International Licensing Industry Merchandisers' Association
Licensing Executives Society
Association of University Technology Managers

Patents:
United States Patent and Trademark Office (Patent Page)
World Intellectual Property Organization (PCT)
European Patent Office