Help: Date Searching

You can search for a specific date or a range of dates in the following fields.

Date searching is initiated by selecting one of the date fields from the pull down box:

Find patents with

Date searching is inactive when the pull down box contains the default text, "Date Search Not Active".

Date search criteria are always "ANDed" to your text search criteria.

The Boolean Text Search lets you enter text for up to three of the text fields and one of the date fields.

The Advanced Text Search lets you enter text for all of the text fields in the database and for one of the date fields.

Date searches should always be used in conjunction with a text search to avoid long search times.


Examples

finds patent documents that were open to public inspection on or after March 12, 1993 and on or before September 27, 1996 and which also match any other text search criteria that you have entered.

finds patent documents that were filed on or after December 3, 1989 and on or before December 3, 1994 and which also match any other text search criteria that you have entered.