Report:Espacenet/Search Syntax/Allowed Operators/Boolean and Proximity Operators

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Boolean and Proximity Operators

The three major Boolean operators (AND OR and NOT) are supported by all Espacenet search forms. In Smart search, the default operator is AND, left has precedence over right, and no operator has precedence by default. [1]

In addition, proximity and other operators are supported in the SmartSearch form. The section below is taken from the Espacenet help file, which describes these functions in more detail.[1]

SmartSearch Operators

Proximity operators

  • prox/distance<n

Example: mouse prox/distance<3 trap
The system will find patents where the words mouse and trap are less than three words apart in the TXT identifier.

  • prox/unit=sentence

Example: mouse prox/unit=sentence trap
The system will find patents where the words mouse and trap happen to be in the same sentence in the TXT identifier.

  • prox/unit=paragraph trap

Example: mouse prox/unit=paragraph trap
The system will find patents where the words mouse and trap happen to be in the same paragraph in the TXT identifier.

  • prox/ordered

Example: ia=Apple prox/ordered ia=Corp
The system will retrieve documents having Apple Corp but not Corp Apple.


Comparison operators

  • = (Equal to)

This is the default relation.
Example: pa=siemens

  • all

When using this operator, all terms entered within quotes will be found within the field identifier, although perhaps not in the order in which they appear. Terms to be searched within a specific field identifier should be surrounded by quotation marks.
Example: ti all "paint brush hair"
This query will locate records where the words "paint," "brush," and "hair" are all present in the title.

  • any

When using this operator, any of the terms entered within quotes will be retrieved within the field identifier. Terms to be searched within a specific field identifier should be surrounded by quotation marks.
Example: ti any "motor engine"
This query will locate records where either the words "motor" or "engine" are present in the title.


Operators which are only valid for the publication date field identifier

  • within

Example: pd within "2005 2006" OR pd within "2005, 2006".

  • >= Greater than or equal to

Example: pd >=2005 will retrieve documents having a publication date higher than or equal to 2005.

  • <= Less than or equal to

Example: pd <=2005 will retrieve documents having a publication date less than or equal to 2005.


Sources

  1. 1.0 1.1 "Operators in Smart Search." Espacenet website, http://ep.Espacenet.com/help?locale=en_EP&method=handleHelpTopic&topic=operators. Accessed on April 11, 2011.
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