Should there be anything wrong with an entry, please, let me know. I will be glad to correct it.
Note: an entry can appear in several categories.

Organizations and Offices

• Australian Office for IP protection.
• Brazilian Patent Office.
• Canadian Intellectual Property Office (CIPO).
• Chinese Patent Office (SIPO). English version.
• Czech Patent Office. For english version, click the selection in bottom-left corner.
• Danish Patent Office.
• European Patent Office. Manages INPADOC.
• French Office for IP protection.
• German Patent Office.
• Indian Patent Office.
• Intellectual Property Office of New Zealand.
• Japan Patent Office.
• Spanish Office for IP protection.
• Swedish Patent Office.
• UK Patent Office.
• US Copyright Office.
• US Patents Office.
• US Patent Office patents & trademarks news.
• Various Organizations:
• DOI - Digital Object Identifier system managed by the International DOI Foundation (IDF).
• mEDRA. European registration agency of DOI (costs: 3-5 euros/doi).
• EFF Electronic Frontier Foundation.
  They are dedicated to defending freedom on the Net, busting false patents, etc ...
  See their Patent Busting Project, Blogger's Rights page and many more.
• Invent Now. National Inventors Hall of Fame.
• ISBN International Standard Book Number. They assign the numbers.
• PIUG. Patent Information Users Group (international society for patent information). Excellent.
• WIPO, World Intellectual Property Organization.
  In particular, see their copyright pages

Journals, e-Zines and Blogs

• Snippets, an on-line IP protection Journal backed by MBHB.
• Blogs
• Library Law Blog.
• Patent Docs, a Biotech & Pharma Patent Law & News Blog of Donald Zuhn et al.
• Patently-O, a Patent Law Blog of Dennis Crouch. Affiliation: MBHB.

IP Classification Reform

• Chemical Abstracts IPC Reform page at ACS (American Chemical Society).
• STN IPC Reform page at Science & Technology International.
• WIPO IPC Reform page. Here you can download the original documentation (PDF's).
  Available also in Spanish and French

Patent searches and related services

• Canadian Patents Database.
• INPADOC, INternational PAtent DOcumentation Center of the EPO.
• Fildata. Italiano. Vedi Servizi Gratuiti - Ricerca FILDATA.
• EspaceNet. Free, world-wide searches. Tip: search keywords in Abstracts.
• Free Patents Online - All the Inventions of Mankind.
  You have to register, but it is free and very good.
• German patents searches.
• Indian NIC, National Informatics Center.
• Patent Storm. US-centered; very good.
• Science IP service of CAS (Chemical Abstract Services) of the ACS.
• US Patent Office patents searches.

IP definitions and legal aspects.

• Legal Database. Very good!
• Legal Information Institute ac Cornell University Law School. All kinds of laws - not just IP
• NOLO - law for all. Excellent dictionary and more.
• IP Menu. A huge and well organized directory.
• Justia - a huge law dictionary, wiki, and more.

Copyright issues

• Chilling Effects Clearinghouse. All about copyright.
• Chilling Effects FAQ's. Very informative.
• Copyright & Fair Use at Stanford University Libraries.
• DMCA (Digital Millennium Copyright Act) on Wikipeadia.
• Library Law Blog.
• US Copyright Office. An e-mail News daily. Registration required.
• US Copyright Office FAQs. A great source of info.
• World Copyright Law Report. An e-mail News daily. Registration required.
• Related matters:
• DOI - Digital Object Identifier system managed by the International DOI Foundation (IDF).
• ISBN International Standard Book Number. They assign the numbers.
• Italian ISBN. Qui e' possibile scaricare un buon manuale (PDF).
• mEDRA. European registration agency of DOI (costs: 3-5 euros/doi).

Trademark issues

• OAMI. European Office for Harmonization of Internal Market (trademarks, designs, models).
• INTA. International Trademark Association.
• Trademark site of Georg Pintz & Partners. Affordable.
• US Patent Office trademarks searches.
• World Trademark Law Report. An e-mail News daily. Registration required.

Alternative approaches to IP protection

• Alternatives to Intellectual Property, an article by Bennett at al.
• AEShareNet, an Australian licensing system
  (known also under the heading Free for Education).
• Budapest Open Access Initiative (BOAI). Editors and scientists: Join this movement!
• Creative Commons. A copyright protection service licensing and promoting open-content.
• Free to Read initiative of the American Physical Society.
• Free Software Foundation movement. Very interesting.
• GNU Project promotes free distribution and circulation of software:
  = GNU General Public License.
  = GNU Lesser General Public License.
  = GNU Copyleft Free Documentation License (in particular Free Documentation License).
  = GNU licenses, FAQs, etc.
• Open Access overview by Peter Sauber.
• Open Source software.
• Software Freedom Conservancy,
  an organization composed of Free and Open Source Software (FOSS) projects.

Companies offering patent and IP services

• Clarke & Modet. Largest IP consulting firm in Spain, Portugal and South America.
• Delphion. Patent searches and investment consultiong.
• Extra Byte offers technical expertise in patents evaluation and legal litigation in cases
  involving physics, especially NMR (Nuclear Magnetic Resonance) and MRI (MR Imaging).
• Fildata. Ricerche e documentazione brevetti in Italia e all'estero.
• Gallagher & Dawsey for small and medium-size Companies. Cincinnati, Columbus, Dayton, Ohio.
• Georg Pintz & Partners in Hungary.
• International IP Protection in the US. They publish their prices!
• Kevin Kennedy & Associates. Expert technical consulting, including legal services.
• MBHB, McDonnell Boehnen Hulbert & Berghoff. Pragmatic business solutions.
• Oppedahl Patent Law Firm. Info+. They are willing to give before they get. Thumbs up.
• Questel Orbit. Intellectual Property Group.
• Studio Torta in Italia. Torino, Milano, Bologna, Treviso, Rimini, Roma.
• Dialog online training. Part of Thomson Scientific.

Resources, manuals, instructions, advice, ...

• 10 Big Myths about copyright explained by Brad Templeton. Web-related copyright issues.
• Copyright basics for Web authors and users. Useful links.
• DOI - Digital Object Identifier overviews and manuals.
  If you are new to DOI, start with the overview by N.Paskin (PDF, 83 kB) and the links therein.
• General information about patents at Oppendahl.
• Independent Inventor's Resources from US Patents Office.
• Inventions and Patents
  at the MIT Open CourseWare initiative. Free course.
• NOLO - law for all. Excellent dictionary and more.
• IP Menu. A huge and well organized directory.
• Justia - a huge law dictionary, wiki, and more.
• Patents, Copyrights, and the Law of Intellectual Property
  at the MIT Open CourseWare initiative. Free course.
• PIUG (Patent Information Users Group) links.
• Snippets, an on-line IP protection Journal backed by MBHB.
• The British Library collections on patents, trade marks & designs.
• Uni Berkeley Intellectual Property links.
• Von Hippel's site. Downloadable books and papers from an expert on Innovation.
• Web Law FAQ at Oppendahl.
• What Should Every Chemist Know About Patents, a PDF article (1.12 MB).

Related miscellanea

• Internet Law on legal definitions.
• P3PPlatform for Privacy Preferences (P3P) Project of the W3C commission.

Patent & IP Books, sorted by year and first author

See also: Software & programming books and Web issues & programming books

          Advance notices (years >= 2009):

• Rogers J.L.,
  The Complete Patent Kit, 2E:
  A Practical Guide for Getting Your Own Patent...and Protecting it Once You Have it.
  2nd Edition, Sphinx Publishing 2009. ISBN 1-572-48693-7. With CD. more >>
  

  Year 2008

• Bently L., Sherman B.,
  Intellectual Property Law,
  3rd Edition, Oxford University Press 2008. ISBN 0-199-29204-3. more >>
• Bessen J., Meurer M.J.,
  Patent Failure: How Judges, Bureaucrats, and Lawyers Put Innovators at Risk,
  Princeton University Press 2008. ISBN 0-691-13491-X. more >>
• Boldrin M., Levine D.K.,
  Against Intellectual Monopoly,
  Cambridge University Press 2008. ISBN 978-0521879286. more >>
• Boyle J.,
  The Public Domain: Enclosing the Commons of the Mind,
  Yale University Press 2008. ISBN 978-0300137408. more >>
• Grissom F.E., Pressman D.,
  Inventor's Notebook: A Patent It Yourself Companion,
  5th Edition, Oxford University Press 2008. ISBN 1-413-30644-6. more >>
• Heller M.,
  The Gridlock Economy: How Too Much Ownership Wrecks Markets, Stops Innovation, and Costs Lives,
  Basic Books 2008. ISBN 0465029167. more >>
• Netanel N.W.,
  Copyright's Paradox,
  Oxford University Press 2008. ISBN 978-0195137620. more >>
• Pressman D.,
  Patent It Yourself,
  13th Edition, NOLO 2008. ISBN 1-413-30854-6. more >>
• West T.,
  Making Your Case: The Art of Persuading Judges,
  Thomson West 2008. ISBN 0-314-18471-6. more >>
  

  Year 2007

• Allaire G., Craig A.,
  Handbook of Research on Open Source Software:
  Technological, Economic, and Social Perspectives,
  2nd Edition, IGI Global 2007. ISBN 978-1591409991. more >>
• Burrell J., Anthony M.M.,
  The Complete Guide to Securing Your Own U.S. Patent:
  A Step-by-Step Road Map to Protect Your Ideas and Inventions,
  Atlantic Publishing Company 2007. ISBN 0-910-62705-3. With CD. more >>
• Guellec D., Van Pottelsberghe de la Potterie B.,
  The Economics of the European Patent System: IP Policy for Innovation and Competition,
  Oxford University Press 2007. ISBN 0-199-29206-X. more >>
• Hunt D., Nguyen L., Rodgers M., Editors,
  Patent Searching: Tools & Techniques,
  J.Wiley 2007. ISBN 0-471-78379-X. more >>
• Lo J., Pressman D.,
  How to Make Patent Drawings: A Patent It Yourself Companion,
  5th Edition, NOLO 2007. ISBN 1-413-30653-5. more >>
• Slusky R.D.,
  Invention Analysis and Claiming: A Patent Lawyer's Guide,
  American Bar Association 2007. ISBN 1-590-31818-8. more >>
• Sowe S.K., Stamelos I.G., Samoladas I., Editors,
  Emerging Free and Open Source Software Practices,
  IGI Publishing 2007. ISBN 1-599-04210-X. more >>
• Steward G.,
  Logos and No Gos: How to Understand and Get the Most from Your Brand IP,
  J.Wiley 2007. ISBN 0-470-06037-9. more >>
• Teska K.,
  Patent Savvy for Managers: Spot & Protect Valuable Innovations in Your Company,
  NOLO 2007. ISBN 1-413-30694-2. more >>
  

  Year 2006

• Bitzer J., Schröder P.J.H., Editors,
  The Economics of Open Source Software Development,
  Elsevier Science 2006. ISBN 978-0444527691. more >>
• Christie A., Gare S.,
  Blackstone's Statutes on Intellectual Property,
  6th Edition, Oxford University Press, USA 2006. ISBN 0-199-28826-7. more >>
• Harte L.,
  Introduction to Digital Rights Management (DRM);
  Identifying, Tracking, Authorizing and Restricting Access to Digital Media,
  Althos 2006. ISBN 1-932-81340-3. more >>
• Chesbrough H., Vanhaverbeke W., West J., Editors,
  Open Innovation: Researching a New Paradigm,
  Oxford University Press, USA 2006. ISBN 0-199-29072-5. more >>
• DeMatteis B., Gibbs A., Neustel M.,
  The Patent Writer: How to Write Successful Patent Applications,
  Square One Publishers 2006. ISBN 0-757-00176-9. more >>
• Frank S.J.,
  Intellectual Property for Managers and Investors:
  A Guide to Evaluating, Protecting and Exploiting IP,
  Cambridge University Press 2006. ISBN 0-521-85106-8. more >>
• Glasser C.J.Jr.,
  International Libel and Privacy Handbook:
  A Global Reference for Journalists, Publishers, Webmasters, and Lawyers,
  Bloomberg Press 2006. ISBN 1-576-60188-9. more >>
• Jaffe A.B., Lerner J.,
  Innovation and Its Discontents: How Our Broken Patent System is
  Endangering Innovation and Progress, and What to Do About It,
  Princeton University Press 2006. ISBN 0-691-12794-8. more >>
• Litman J.,
  Digital Copyright,
  Prometheus Books 2006. ISBN 1-591-02420-X. more >>
• Mueller J.M.,
  Introduction to Patent Law,
  2nd Edition, Aspen Publishers 2006. ISBN 0-735-55672-5. more >>
• Muffato,
  Open Source: A Multidisciplinary Approach,
  Imperial College Press 2006. ISBN 1-860-94665-8. more >>
• Pressman,
  Patent It Yourself,
  12th Edition, NOLO 2006. ISBN 1-413-30516-4. more >>
• Von Hippel E.,
  Democratizing Innovation,
  The MIT Press 2006. ISBN 0-262-72047-7. more >>
• Stasik E., Stasik G.,
  Not so Patently Obvious. The Brief History of Patenting Software
  in the U.S. and Europe and the Trouble with Patents in the Digital Age,
  Althos Publishing 2004. ISBN 1-932-81378-0. more >>
• Stim R.,
  Patent, Copyright & Trademark: An Intellectual Property Desk Reference,
  8th Edition, NOLO 2006. ISBN 1-413-30196-7. more >>
• Zeng W., Yu H., Lin C-Y., Editors,
  Multimedia Security Technologies for Digital Rights Management,
  Academic Press 2006. ISBN 0-123-69476-0. more >>
  

  Year 2005

• Elias S.,
  Trademark: Legal Care for Your Business & Product Name,
  7th Edition, NOLO 2005. ISBN 1-413-30358-7. more >>
• Jaffe A.B., Trajtenberg M.,
  Patents, Citations, and Innovations: A Window on the Knowledge Economy,
  The MIT Press 2005. ISBN 0-262-60065-X. more >>
• Klemens B.,
  Math You Can't Use: Patents, Copyright, and Software,
  Brookings Institution Press 2005. ISBN 0-815-74942-2. more >>
• Stobbs G.A.,
  Software Patents: Cumulative Supplement,
  Aspen Publishers 2005. ISBN 0-735-55460-9. more >>
• Weber S.,
  The Success of Open Source,
  Harvard University Press 2005. ISBN 978-0674018587. more >>
  

  Year 2004

• Becker E., Willms Buhse W., Dirk Günnewig D., Rump N., Editors,
  Digital Rights Management: Technological, Economic, Legal and Political Aspects,
  Springer 2004. ISBN 3-540-40465-1. more >>
• Charmasson H.,
  Patents, Copyrights & Trademarks for Dummies,
  For Dummies 2004. ISBN 0-764-52551-4. more >>
• Cornish H.,
  Intellectual Property: Omnipresent, Distracting, Irrelevant?,
  Oxford University Press 2004. ISBN 0-199-26307-8. more >>
• Durham A.L.,
  Patent Law Essentials: A Concise Guide,
  2nd Edition, Praeger Publishers 2004. ISBN 0-275-98205-X. more >>
• Fishman S.,
  Web & Software Development: A Legal Guide,
  4th Edition, NOLO 2004. ISBN 1-413-30087-1. Also on CD. more >>
• Gilbert J.,
  The Entrepreneur's Guide to Patents, Copyrights, Trademarks, Trade Secrets & Licensing,
  Berkley Trade 2004. ISBN 0-425-19409-4. more >>
• Kavanagh P.,
  Open Source Software: Implementation and Management,
  Digital Press 2004. ISBN 1-555-58320-2. more >>
• Laurent A.M.St.,
  Understanding Open Source and Free Software Licensing,
  O'Reilly Media 2004. ISBN 978-0596005818. more >>
• Stasik E.,
  Strategic Patent Planning for Software Companies;
  A Look at Current Patent and Licensing Strategies,
  Althos Publishing 2004. PDF document. more >>
  

  Year 2003

• Asparatore Books,
  The Art & Science of Patent Law,
  in the series Inside the Minds,
  Aspatore Books 2003. ISBN 1-587-62346-3. more >>
• Rogers E.M., Rogers E.,
  Diffusion of Innovations,
  3rd Edition, Free Press 2003. ISBN 0-743-22209-1. more >>
• Vaidhyanathan S.,
  Copyrights and Copywrongs:
  The Rise of Intellectual Property and How It Threatens Creativity,
  New York University Press 2003. ISBN 0-814-78807-6. more >>
  

  Year 2002

• Reese H.,
  How to License Your Million Dollar Idea:
  Everything You Need To Know To Turn a Simple Idea into a Million Dollar Payday,
  2nd Edition, J.Wiley 2002. ISBN 0-471-20401-3. more >>
  

  Year 2001

• Christensen C.M., Overdorf M., MacMillan I., McGrath R., Thomke S.,
  Harvard Business Review on Innovation,
  Harvard Business School Press 2001. ISBN 1-578-51614-5. more >>
• Raymond E.S.,
  The Cathedral & the Bazaar:
  Musings on Linux and Open Source by an Accidental Revolutionary,
  O'Reilly Media 2001. ISBN 978-0596001087. more >>
• Rosenblatt B., Trippe B., Mooney S.,
  Digital Rights Management: Business and Technology,
  Wiley 2001. ISBN 0-764-54889-1. more >>
  

  Up to 2000

• Glazier S.C.,
  e-Patent Strategies for Software, e-Commerce, the Internet, Telecom Services, Financial Services, and Business Methods (with Case Studies and Forecasts),
  LBI (Law & Business Institute) 2000. ISBN 0-966-14378-7. more >>
• Stobbs G.A.,
  Software Patents,
  2nd Edition, Aspen Publishers 2000. ISBN 0-735-51499-2. more >>
• US Department of Commerce,
  Patents and How to Get One: A Practical Handbook,
  Dover Publications 2000. ISBN 0-486-41144-3. more >>
• Von Hippel E.,
  The Sources of Innovation,
  Oxford University Press, USA 1994. ISBN 0-195-09422-0. more >>