The Advanced Search Page allows you to make a query of the US Patent Full Text Database using command line search syntax. There are 3 steps to submit a query using the Advanced Search Page:
Some points to note:
The Advanced Search Page provides the greatest flexibility for complex searches of the Patent databases. These features include:
You can use the Advanced Search Page to create and execute Quick searches with more than two search terms that use the Quick operators (OR, AND, ANDNOT). Along with these operators, you can use parentheses to further clarify your search statement. In the absence of parentheses, all operators associate from left to right.
tennis AND (racquet OR racket)
If you enter this query, you will retrieve a list of all patents which contain both the term tennis and either racket or racquet somewhere in the document.
television OR (cathode AND tube)
This query would return patents containing either the word television OR both the words cathode AND tube.
needle ANDNOT ((record AND player) OR sewing)
This complex query generates a list of hits that contain the word needle, but does not contain any references to sewing. In addition, none of the hits would contain the combination of record AND player.
The Advanced Search Page allows you to search individual fields found within patents. You can find a list of all indexed fields in the table on the bottom of the page. The full names for each field are given on the right of the column and the corresponding field code is listed on the left.
To narrow your search to hits occurring within a single field, precede your search term with the field code, followed by a forward slash (/). If you do not select a specific field, the text of the entire patent will be searched. If you need help with field searching, see the Field Searching Help Page.
This will search for the word Dobbs within the Inventors Name field of the database. Occurrences of the search term anywhere else on the front page will be ignored.
This query searches for the Current US Classification Class/Subclass 270/31, and will return a list of all patents assigned to that class.
AN/MCNC AND TTL/solder
As this example demonstrates, you can mix field searching with Quick searching. This query would retrieve a list of hits which contain MCNC in the Assignee Name field, and the word solder in the Patent Title.
Note that field names are associative. Using the search statement ttl/(nasal
or nose) is the same as ttl/nasal or ttl/nose.
A group of words enclosed in quotation marks (") will be treated as a single search term. This allows you to search for a multi-word phrase rather than specifying each word as a separate term.
Note that you cannot use truncation ("$") within a phrase that is enclosed in quotation marks.
Searching on this phrase would return a list of all the patents which have the phrase bowling balls anywhere within the indexed text.
This query would find all occurrences of the phrase general motors
within the Assignee Name field.
You can specify a range of dates you are interested in searching, rather than having to specify a certain day or month to narrow your search. This feature is only available in date fields, such as Issue Date and Application Date. This is done by using the -> operator between two dates.
This query would return all patents in the database which were issued any day on or after Nov. 1, 1997, and before or on May. 12, 1998. If your range covers all of the patents issued in a particular year, you will get faster results by selecting just that year instead of searching all of the dates in that year as a range.
Note: The selected years must match the range of years you are searching.
Both dates in your query must be properly formatted for your search to
work. See the help entries on Issue
Date and Application
Date for details.
The Advanced Search Page supports right truncation in queries. This allows you to use a wildcard on the right side of a search term, to retrieve words that begin with a certain string. If you are searching in a specific field, the string must be at least 3 characters in length. If you are not searching in a specific field, the string must be at least 4 characters in length. You cannot use truncation ("$") within a phrase that is enclosed in quotation marks, for example searching AN/"general mot$" will result in an error.
This query would return a large number of hits, since it would retrieve patents that contain the words electricity, electric, electronic, etc. To reduce the number of hits retrieved, you may want to truncate on a longer string. For example, if you are only interested in patents dealing with electronics, you might truncate as follows: electron$ to eliminate electricity, etc.
Be aware that the default search will search every word in every patent
in the years you specify. This can result in very large numbers of
hits. It may be preferable to begin by limiting your search to the
title or abstract fields.
Stopwords are terms that appear so frequently in patent text that
they lose their usefulness as search terms. Although they are not indexed
as search terms, they will be displayed in your search results.