| A patent gives an inventor the right to exclude others from making, using, selling or importing his invention. An invention can be patented based upon its useful features (a utility patent) or its appearance (a design patent). The links below are patent searches you can run on the U.S. Patent and Trademark Office web site. They are not a substitute for a thorough patent search provided by intellectual property counsel, but are a good starting point if you have an invention you believe may be patentable.
Search U.S. Patents(USPTO) Search U.S. Patents(Google)
Search U.S. Patents (Wikipatents)
How to Search U.S. Patents at the USPTO(video)
USPTO Classification System for Searching Patents
Search Published U.S. Patent Applications
Search PCT International Patent Applications
PAIR - Patent Application Information Retrieval System on Particular Patents
Get Copies of U.S. Patents
Search Patent Assignment Records
Check Maintenance Fee Status of U.S. Patent
Patent Peer Review Patent List
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