Advanced Patent Search / Patent Search Database Software
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  1. Function Reference
  2. Patent Search
  3. Advanced Patent Search

We can search patents on the basis of a combination (search formula) of various fields (full-text, assignee, inventor, patent classification etc...).

Patent Search Function

Choose a Patent Database

For more details about the database, see (Patent Database)

Choose a Patent Database

Select Patent Searching Field

Select Patent Searching Field

You can select searching fields by follows

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 input search query

You can input plural condition by splitting space letters. And you can choose the combination of these conditions from "AND" or "OR" operations. In the following picture, space-splitted words "B41J H04N" and selected "AND" operation means "search patents by B41J AND H04N by IPC8)".

IPC8: B41J AND H04N

You can use this syntax to other fields (e.g. assignee, filing date, full-text). Following picture is the patent search condition, "wireless" AND "LAN" in abstract field.


Phrase Search

You may want to search for multiple words in phrases. You can search for multiple words by enclosing phrases in double quotation. For example, when you type a “wireless LAN”, you can obtain the patent including the strict phrase.

Two or more phrases can be input to one search field.

Phrase Search

Phrase Search with Wildcard character

Wildcard search

The patent can be retrieved with a wild-card (available in the text field and the patent classification.).

  • Mark "?" means one arbitrary character. 　(IPC8: B4?J)
  • Star "*" shows an arbitrary character string of 0 characters or more. 　(IPC8: B%J)
Wildcard search

Proximity Patent Search

Patent Integration supports proximity searching of text fields (full-text, abstract, claims, specification). Following figure shows searching for "wireless" and "LAN" within 2 words of each other.

Proximity Patent Search

For example, "Wireless PBX or LAN" was hit.

Proximity Patent Search

Proximity Search with Wildcard character

Weighting Keyword

The weight of the retrieval word in the text field can be changed. The order of displaying the retrieval result can be changed by changing the weight of retrieval word.

For example, the weight of retrieval word "LAN" can be set to five times by inputting to the summary retrieval field as "wireless LAN^5".

Weighting Keyword

Weighting Keyword

Creating a Patent Search Query

Combining searching fields to create searching query. In the following figure, search results includes patents, has "computer" in full-text and "Intel" in assignee fields (AND condition).

Patent Search Query

Supported operators are follows:

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)

Reference