Term ends Aug 23, 2042 · Medium confidence
20-year base term ends Jun 8, 2041
Why Medium: A parent in the chain could not be resolved.
Held by Chorus, LLC
Filed Mar 21, 2023 as application 18/187,023 · Granted Mar 31, 2026
Base term plus 441 days of patent term adjustment (USPTO delay)
Today
2021
2042
Clock starts
Jun 8, 2021
Jun 8, 2021
Term ends
Aug 23, 2042
Aug 23, 2042
Granted
Mar 31, 2026
Mar 31, 2026
base term
patent term adjustment
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
441
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
11
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 441 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. Confidence: Medium. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jun 8, 2021, when application PCT/US2021/036501, the earliest non-provisional in its chain, was filed (this one was filed Mar 21, 2023); a parent in its chain could not be resolved (the next row) | Jun 8, 2041 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +441 days, USPTO patent term adjustment record | Aug 23, 2042 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 23, 2042 | Medium confidence |
This family
| Application PCT/US2021/036501 | PCT application no patent term | no patent term |
| Application PCT/US2021/062496 | PCT application no patent term | no patent term |
| US 11,533,914 | In force Jun 2041 | Jun 2041 |
| US 12,010,997 | In force Jun 2041 | Jun 2041 |
| US 12,010,998 | In force Jun 2041 | Jun 2041 |
| US 12,588,679 | this patent Aug 2042 | Aug 2042 |
| US 12,653,193 | In force Feb 2043 | Feb 2043 |
| Application 18/187,100 | Pending not computed | not computed |
8 of 11 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Mar 24, 2023 Reel 63096, frame 367 | Lorch, Daniel P.; Lewis, Adriane L.; Heater, Kenneth J. | Materials Engineering and Technical Support Services Corporation | Assignment of Assignor's Interest |
| Mar 24, 2023 Reel 63096, frame 529 | Materials Engineering and Technical Support Services Corporation | Chorus, LLC | Assignment of Assignor's Interest |
| Mar 24, 2023 Reel 63164, frame 355 | Wells, Timothy N.; Desabato, Raymond; Rader, Richard S. | Chorus, LLC | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Aug 2042
Term ends Aug 23, 2042. Maintenance fees still fall due before then
Note
The 441 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.