Unique Assignment Events Field (ANA_ANRE_EXE_CT)
To query patents by the number of unique assignment events associated with a patent, use the ANA_ANRE_EXE_CT field code.
Patents with lots of assignment events are sometimes difficult to unwind when trying to clear the title before a transaction takes place. The ANA_ANRE_EXE_CT analysis field helps you determine which patents may require additional work to clear the title.
It is not used very often, but it is a handy measure of the potential complexity of a transaction.
To double check you have inventor releases in place, you can query the field by querying for patents where the field is empty by using the following:
You can then narrow down your search by assignee, or issue date, or any of a number of different options, as needed.
- FIELD:isEmptyANA_ANRE_EXE_CT --> Finds patents with no logged events in the Assignments tab. This may be helpful to ensure you have the proper inventor recorded at the USPTO.
- ANA_ANRE_EXE_CT:[8 to 20] --> Finds patents with from 8 to 20 logged events in the Assignments tab.
NOTE: As you can see from the example above, assignment events could include multiple different actions, such as a change of name, or an assignment of assignor's interests.