Us patent dating chart
A detailed Patent Technology Monitoring Team report, titled Issue Dates and Patent Numbers Since 1836, which contains first patent numbers and the day of issue for patents issued since 1963, also may be of interest. Patent and Trademark Office Electronic Information Products Division - PTMT P.
In addition, the Patent and Trademark Office has a file that lists all patent numbers and their associated dates of grant. See the link labeled, "Click here to download the zipped Patent Grant Authority Files". O Box 1450 Alexandria VA 22313-1450 tel: (571) 272-5600 fax: (571) 273-0110 email: [email protected] of PTMT pages at the USPTO Web Site: PTMT files available for download at : Is there a question about what the USPTO can or cannot do that you cannot find an answer for?
Prior to that date, an estimated 9,957 patents had been issued.Many researchers mistakenly think that all searching can be done electronically – and this is essentially true for U. Older patents do not have as many online search options because the patent pages were put into the USPTO database as scanned images. Patent searchers, especially inventors who need to thoroughly search the entire realm of patents to ensure their idea hasn’t already been patented, have more limited options available electronically.Defensive Publications (T) and Improvement patents (AI) are not included in this table.(**) Reissue patents were not separately numbered until 1838.