Number of Post-Grant Assignment Events (ANA_ANRE_PEXE_CT)
To query patents by the number of assignments registered after a patent was issued, use the ANA_ANRE_PEXE_CT field code.
The ANA_ANRE_PEXE_CT field may be more useful than the ANA_ANRE_EXE_CT field, which counts ALL assignment events. However, the ANA_ANRE_PEXE_CT field stores the number of assignment events recorded after the grant date of the patent. Most PRE-grant assignment events are inventor assignments or inventor releases recorded at the USPTO, and are not transactions.
POST-grant assignment events tend to be transactions or security agreements. The ANA_ANRE_PEXE_CT will help you spot patents with potential problems post-grant.
General Note:
The assignment (or reassignment) database is how AcclaimIP determines the Current Assignee. If there is a change in ownership, we change the Current Assignee field. AcclaimIP does not change the ownership for Security Agreements that are registered with the USPTO.
Examples
Notice in the example above that I have sorted by execution date. If you look at the top Execution Date in the Assignments tab, you will notice that the execution date was 2004-04-04. Now look at the issued date. You can see that this patent was issued in 2001. Therefore, the first assignment was done over 2 years later.
There is a trick to this field when looking for empty fields (i.e., patents with no post-grant assignment events). There are two possible values, empty (null) or 0 (zero). Patents with no assignment history at all have a null value, and patents with an assignment history, but no post-grant assignment history, have a 0 value in the ANA_ANRE_PEXE_CT field.
Option 1:
FIELD:isEmptyANA_ANRE_PEXE_CT OR ANA_ANRE_PEXE_CT:0 --> Finds patents with no post-grant assignment events.
Option 2:
*:* NOT ANA_ANRE_PEXE_CT:[1 TO *] --> Same results as above. Note the *:* (star colon star) that precedes the NOT operator. *:* means all field codes (all data). You can lead a query with a Boolean operator so another possibility is to just query "NOT ANA_ANRE_PEXE_CT:[1 to *]. In the example query, the *:* just says "everything, but NOT this query." You can run either search.
0 Comments
Add your comment