- buypatents.com
 - Patent brokerage firm. - Cool License Corporation
- Patents, trademarks, or copyrights available as well as the licensing tools to assist in closing a deal.
- Davison
- Offers help to inventors through the process of preparing and presenting new or improved product ideas for possible licensing.
- Free Patent Auction
- Free Patent Auction lists numerous truly innovative ideas which are available for sale or licensing.
- Idea Trade Network
- Allows companies and individuals to buy or sell ideas, new inventions and patents as well as arts, crafts, and other intellectual properties.
- Patent & License Exchange
- Business-to-business internet-based auction facility for the safe and efficient transfer of patents and licenses.
- PricewaterhouseCoopers Intellectual Property Exchange
- TechEx
- Internet-based exchange for buying and selling biomedical technology.
- Technology Transfer
- Offers intellectual property licensing opportunities and collaborative development of research and technology with industry.
- yet2.com
- Global marketplace for intellectual property allows inventions to be listed, licensed, sold, and ultimately applied.
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