Priority and publication date filters

You can limit results to those within a defined date range. This is often used in in invalidity searching to limit available prior art to those patent publications prior to the critical date of the target patent.

  • You can choose from either a priority date or the first publication date of results to limit the date range
  • To set the period for your search, manually type the date YYYY-MM-DD then hit Enter. Entering a date without "-" works as well
  • The default start date is 1976-01-01 because data prior to that is not reliably available in digital format
  • To turn off a date filter you have already set, simply delete any dates you added

Did this answer your question? Thanks for the feedback There was a problem submitting your feedback. Please try again later.

Still need help? Contact Us Contact Us