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indexSearching the Cited Patent Number - Expand to Include Family FieldExpand your search to include all patent numbers found within a patent family by selecting this field. You must enter a unique patent number when using the Expand Family option. For example: EP178925 or EP178925-A Do not enter a partial patent number with a wildcard as this type of query results in an error. For example: EP1789* and EP17892? are not valid searches because the patent number could be found in more than one family. indexUsing the Expand to Include Family OptionThe 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. indexPatent Family
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indexCited Patent Number + Family Examples
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