All Assignees Field (AN)

AN is a special field code for searching all of the assignee fields at once.  This includes the original, guessed, current, and chain of custody variants, in their normalized and non-normalized states.  While not precise (at all, really), it is often helpful for cleaning up lists, and for seeing if there are any outliers that our normalization team missed.


  • AN:seimens --> Finds documents with this specific misspelling in any of the assignee fields.

Note: You can also use field codes, like the AN_ORIG field code, for a similar search.  However, the AN_ORIG field code searches only for the original assignee name as written on the patent, including punctuation, misspellings, and creative names.


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