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Searching the Cited Patent Number Field

Searches the Patent Number(s) field within a patent record to find patents that cite the patent number that you entered in your search.

Enter one or more patent numbers connected with search operators. Enter complete patent numbers or partial patent numbers using wildcards.

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Using the Expand to Include Family Option

The results of a Cited Patent Number Search using the Expand Family option may differ from the results of a typical Cited Patent Number search.

For example, the search query CX=EP178925-A returns more records that cited this patent record than CP=EP178925-A because you have expanded your search to include patent numbers found within a family of patents.

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Cited Patent Number Examples

• EP797246 finds patent records that cite patents with the patent number of EP797246 (any status code).

• EP797246 OR US5723945-A finds patent records that cite either patent EP797246 or US5723945-A or both patents (any status code).

• US5723945-A AND EP797246 finds patent records that cite both of these patents (any status code).