Boolean Operators

Boolean operators are used to combine separate queries into a single complex query. SureChEMBL uses three Boolean operators: and, or, and not.

Operator Definition
AND For an individual document to be included in the results set, it must contain both of the individual query elements.
OR For an individual document to be included in the results set, it only has to contain one of the individual query elements.
NOT For an individual document to be included in the results set, it must contain the first listed individual query element and must not contain the second.

Examples

Assignee(s)/Applicant(s):

Sunovian AND IPCR: A63B006936

Only those patents containing the Assignee or Applicant value of Sunovian and also containing the IPCR of A63B 69/36 appear in the results.

Sunovian OR IPCR: A63B006936

All those patents containing the Assignee or Applicant value of Sunovian would appear in the results set regardless of the IPCR. Likewise all the patents containing the IPCR of A63B 69/36 appear in the results, no matter who the assignee or applicant was.

Sunovian NOT IPCR: A63B006936

Only those patents containing the Assignee or Applicant value of Sunovian where the IPCR of A63B 69/36 does not occur appear in the results.

Note: The Boolean operators must ALWAYS be written in uppercase.

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