How to Search By Patent Number

Need to locate a patent by its patent number?

Do you have a U.S. patent number in hand and want to find a copy of the full patent?

Here are 4 quick ways to search by patent number, and then obtain the full text of the patent.

1. Go to the USPTO Number Search Site and enter your number in the search box.
(Example: 5,976,023 )

2. Go to the advanced patent search page of Google Patent Search and enter your number in the "Patent Number" search box.
(Example: 5976023)

3. Go to the PAT2PDF site and enter your number in the search box. This site gives you a PDF version of the patent to download for free.
(Example: 5,976,023 or 5976023)

4. Go to the Yahoo! site and enter the word "patent" and your patent number in the search box. The first result will be a Yahoo! Shortcut that will take you directly to the patent in the USPTO database
(Example: patent 5976023)

Google
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Latest Update: 1/31/10
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Disclaimer: The Patent Search Information site is the work of an information specialist with over 25 years of experience and strives to be as accurate and useful as possible. However, no information from this site should be construed in any way as providing legal advice. Consult an attorney if you need legal advice.