Professional Associations:
- World Intellectual Property Organization(WIPO)
- European Patent Office (EPO)
- United States Patent Office (USPTO)
- USPTO Registered Patent Agent/Attorney Search
- UK Chartered Institute of Patent Attorneys(CIPA)
- International Association for the Protection of Intellectual Property (AIPPI) USA
- International Association for the Protection of Intellectual Property (AIPPI) International
- American Intellectual Property Law Association (AIPLA)
- Asian Patent Attorney Association (APAA)
- Intellectual Property Institute (IPI)
- National Association of Patent Practitioners (NAPP)
- International Intellectual Property Institute (IIPI)
- Patent Searching and Inventing Resources - Free Patents Online
- Intellectual Properties