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Patent document numbering is a complex subject, however, so you should review the following pages for more detailed information: application-reference and publication-reference. We also recommend checking the Release Notes for patent number or kind code changes.
If you have a list of numbers to search, you may use the List search option in CDWI, which you can read about here. This option includes a validation feature which will convert some patent publication numbers into CLAIMS Direct's standard ucid format.
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