Also listed on Ats IP, LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 9, 2040 · High confidence
20-year base term ends Nov 16, 2039
Filed Jan 6, 2023 as application 18/151,296 · Granted Jan 27, 2026
Base term plus 175 days of patent term adjustment (USPTO delay)
Today
2019
2040
Clock starts
Nov 16, 2019
Nov 16, 2019
Term ends
May 9, 2040
May 9, 2040
Granted
Jan 27, 2026
Jan 27, 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
175
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.
6
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 175 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. Confidence: High. 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 Nov 16, 2019, when application PCT/US2019/061894, the earliest non-provisional in its chain, was filed (this one was filed Jan 6, 2023) | Nov 16, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +175 days, USPTO patent term adjustment record | May 9, 2040 | 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 | May 9, 2040 | High confidence |
This family
| Application PCT/US2019/061894 | PCT application no patent term | no patent term |
| US 11,552,235 | In force Apr 2040 | Apr 2040 |
| US 11,476,401 | In force Apr 2040 | Apr 2040 |
| US 12,538,705 | this patent May 2040 | May 2040 |
| Application PCT/US2023/018689 | PCT application no patent term | no patent term |
| Application 18/855,307 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Jun 29, 2023 Reel 64111, frame 897 | Berken Energy LLC | Ats IP, LLC | Assignment of Assignor's Interest |
| Jul 11, 2023 Reel 64211, frame 692 | Petkie, Ronald; Newman, John B.; Basa, Ion M. | Berken Energy LLC | Assignment of Assignor's Interest |
| May 12, 2025 Reel 71085, frame 805 | Ats IP, LLC | Advanced Thermovoltaic Systems, Corp. | 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.
What's changing
May 2040
Term ends May 9, 2040. Maintenance fees still fall due before then
Note
The 175 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.