Advanced Patent Search


By using advanced patent search function, you can search for patents using advanced search expressions combining multiple fields.

Selection of patent database to be searched for patent

The Paten Database in advanced patent search can be selected from the pulldown.

Selection of patent search field

Patent search target can be selected from the following field etc. It is also possible to conduct a patent search that combines multiple conditions. For legal status fields, see Legal Status / Examination Information, Current Status.

Patent Search Field

name of field explanation syntax
Doc No. Patent publication number or patent registerd (granted) number. USP6234222
Ap No. Patent filing number JP2004-023423
IPC8(R) Patent search by latest international patent classification IPC8(R). B41J
USClass Patent search by USClass (U.S. only). 101/3.1
FI Patent search by Japanese FI classification (JP only). B41J
fterm Patent search by Japanese Fterm classification (JP only). 2C005
IPC1-7 Patent search by international classification IPC1-7 B41J
Full Text Patent search by abstract, claims and specification. Computer Wireless LAN
Abstract Patent search by abstract. Computer Wireless LAN
Claim Patent search by patent claims. Computer Wireless LAN
Spec. Patent search by patent specification. Computer Wireless LAN
Assignee Patent search by patent assignee (partial match). Intel Microsoft apple
Inventor Patent search by patent inventor (partial match). Bill May
Attorney Patent search by patent attorney or firm name (partial match). Bill May
Filing Date Patent search by patent filing date. *1
Pub Date Patent search by patent publication date. *1
Reg Date Patent search by patent registerd date (granted only). *1
  • 1: Syntax of Date Fields (Enter split by colon :)
    • Searching for patents of January 1, 2002 to January 1, 2003 is 20020101:20030101
    • Searching for patents of after January 1, 2002 is 20020101:
    • Searching for patents of before January 1, 2003 is :20030101

How to enter each field of patent search conditions

You can enter multiple patent search conditions on each field by separating them with a space. You can also specify how to combine these patent search criteria (combined with AND or combined with OR).

The method of specifying this patent search condition can also be applied to any other fields (eg patent applicant, patent inventor, patent filing date etc).

Phrase search

You may want to search for multiple words with phrases. Phrase search can be searched by enclosing multiple words with double quotes.

You can also enter multiple phrases in one search field.

Wildcard search

You can search for patents using wildcards (text fields are only available in English literature, patent classification etc).

  • A question mark "?" Indicates an arbitrary one character. (e.g., IPC8: B4?J)
  • The star "*" indicates any character string of zero or more characters. (e.g., IPC8: B*J)

Patent search by proximity search

The patent integration can conduct a patent proximity search of the text field (full text, summary, claims, detailed explanation).

To do a proximity search, select "PROXIMITY" from the pull-down on the right side of the input field.

Weighting of search words

You can change the weight of the search term for the text field. The weighting for each search term is reflected in the relevance score in the list display, and the patent with the high degree of relevance to the keyword is displayed in the higher rank.

Patent search by concept search

The patent integration can conduct conceptual search of patents for text fields (full text, summary, claims, detailed explanation). Concept search is a function to generate a suitable search word from the input natural sentence and perform a patent search.

To do a concept search, select "CONCEPT" from the pull-down on the right side of the input field.

The concept search result is reflected in the relevance score in the list display, and the patent with the high degree of relevance is displayed in the higher rank. Since the concept search has the fluctuation of expressions peculiar to the natural language, it is suitable for the primary search of the patent before the search using the patent classification.

Creating patent search formulas

Complex patent search formula can be created by combining multiple input fields.

When a text search field is included in a search expression, it is automatically reflected in the relevance score, and a patent with a high relevance to the keyword is displayed in a superior.

There are three kinds of operators that can be used in patent search formulas.

Patent Search Query Operator

operator explanation
+ OR operation.Disjunction.
* AND operation.Conjunction.
- NOT operation.

OR operation

OR operation

AND operation

AND operation

NOT operation

NOT operation

Important Reminder

Important Reminder of Patent Search Query Operator

Patent Integration does not put "AND(*) operator" priority over "OR(+) operator". Unless bracket, Patent Integration interpret search query by order "i.e. A+B*C+D*E is interpreted as (((A+B)*C)+D)*E". So a query X+Y*Z is not the same as a query X+(Y*Z). If you use bracket, please notify whether the logical structure of the query is collect or not.

X+Y*Z = (X+Y)*Z is as follows

X+Y*Z = (X+Y)*Z

X+(Y*Z) is as follows

X+(Y*Z)

Patent search method (Introduction).

Patent search method (Beginner).

Patent Search (Patent Database)

Patent Analysis