Reissued patents

This is a beta version of a reissued patent page! It is currently based on 16,621 reissued patents granted from 1976-01-06 through 2015-04-07. The underlying patents were originally issued from 1961-10-10 through 2014-04-22 on 2,346 unique issue dates.


Now that this data is a database table we can do fun things like:

Bulk patent number checker
Patent number file name:

The file specified above will be searched for patent numbers. The numbers must contain properly placed commas. Ex: 1,234,567 There can be a preceding RE, X, D, PP, AI (though not all appropriate data is loaded!) The first 1,000 patent numbers encountered will be checked to see if they are in the reissued patent table!