Find That Patent by Dream Ratings
- Searchable database of U.S. patents, abstracts and claims.
- http://www.findthatpatent.com/

Patent Looker, LLC - PatentMonkey.com
- Patent search with PDF downloads.
- http://www.patentmonkey.com/

European Intellectual Property Association
- Online access to inventions and patent information
- http://www.eipa-patents.org

Patent Genius
- Full text and information on U.S. patents since 1976, available by category, class, inventor or holder.
- http://www.patentgenius.com/

Google Patent Search
- Search more than seven million U.S. patents.
- http://www.google.com/patents

Fishing Patents
- Examples of patents related to fishing, sorted into categories.
- http://www.fishingpatents.com

Clearly Understood, Inc.
- Offers US Patents and Applications, downloadable in PDF format.
- http://www.clearlyunderstood.com

Patent Reader
- Searchable database of U.S. patents with downloads available in PDF format, from Semantic Dream Inc.
- http://www.patentreader.com/

The Invent Blog
- Weblog covering patent law developments, from attorney Stephen M. Nipper.
- http://nip.blogs.com

British Library - Patents Information Services
- Links to databases and gazettes in patents, designs and trademarks, advice on how to search databases plus historical information.
- http://www.bl.uk/patents

SoYouWanna Patent Something?
- Article discusses step-by-step the patent application process.
- http://www.soyouwanna.com/site/syws/patent/patentFULL.html

James Dyson
- Help and guidance for inventors.
- http://www.dyson.com/invent/

Software Patent Institute
- Nonprofit corporation formed to provide courses and prior art about software technology to help improve the patent process.
- http://www.spi.org/

Freshpatents.com
- Listing of recent US patent applications with keyword monitoring and RSS feeds.
- http://www.freshpatents.com/

Free Patents Online
- Searchable summaries of U.S. patents.
- http://www.freepatentsonline.com/

Patent Search Information Site
- Introductory guide to patent information and the conduct of searches.
- http://www.patent-search-information.com

Patently Obvious
- Weblog describing cases and developments in patent law.
- http://patentlaw.typepad.com/

Rabin & Berdo, PC
- District of Columbia law firm, offering a downloadable brochure on mechanical and electrical patents.
- http://www.awoodpatents.com

Patent Alert
- Providing email updates about inventions recently patented in the United States.
- http://www.patentalert.com/

CAMBIA Intellectual Property Resource
- Organization devoted to international agriculture and health sciences. Offers patent search, biotechnology white papers, and tutorials.
- http://www.cambiaip.org/

Protection of Software-related Inventions in Europe and Japan
- Information regarding the protection of computer-related inventions, from the law firm of Ladas and Perry.
- http://www.ladas.com/Patents/Computer/Computer.EPOJP.html

Greenberg Traurig, LLP - Patent Law Net
- Interactive resource for patent counsel and intellectual property managers.
- http://www.patentlawnet.com/

Ius mentis
- Concise primers, answers to frequently asked questions, and articles on patents and other intellectual property rights, aimed at people with a background in information and communication technology.
- http://www.iusmentis.com/

Thomas
- Information of all patent-related bills currently pending before the U.S. Congress.
- http://thomas.loc.gov/cgi-bin/query/r?c104:patent

Patents4Technologies
- Overview of United States patent law with reference to court rulings.
- http://www.patents4technologies.com/PatentLaw.htm

HowStuffWorks: How Patents Work
- Easy to read illustrated narrative that provides basic information on patents, what they are, how they work and how an inventor goes about getting one.
- http://www.howstuffworks.com/patent.htm

CrazyPatents.com
- Examples of wacky and crazy patents that have been issued to inventors throughout the years.
- http://www.crazypatents.com

Delphion Intellectual Property Network
- A premier site for searching, viewing, and analyzing patent collections worldwide.
- http://www.delphion.com

PatentGopher
- A free patent retrieval service that delivers patents in portable document format (PDF) via email or direct download.
- http://www.patentgopher.com

Strategy Patent, LLC
- Information on the creation and valuation of intellectual property assets, particularly patents. From Coleman Sudol LLP.
- http://www.patentassets.com/

Intellectual Property Law Server
- Answers to frequently asked questions about patents, copyrights, and trademarks, from the law firm of Oppedahl & Larson.
- http://www.patents.com/

Patently Absurd!
- Absurd, weird and wacky patents, mainly from the UK Patent Office, also offering links to serious patent information.
- http://www.patent.freeserve.co.uk