Term ends Jun 20, 2044 · High confidence
20-year base term ends Dec 27, 2043
Filed Dec 27, 2023 as application 18/397,790 · Granted Nov 18, 2025
Base term plus 176 days of patent term adjustment (USPTO delay)
Today
2023
2044
Clock starts
Dec 27, 2023
Dec 27, 2023
Term ends
Jun 20, 2044
Jun 20, 2044
Granted
Nov 18, 2025
Nov 18, 2025
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
176
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.
4
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 176 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 Dec 27, 2023, when this application, 18/397,790, was filed | Dec 27, 2043 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +176 days, USPTO patent term adjustment record | Jun 20, 2044 | 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 | Jun 20, 2044 | High confidence |
This family
| US 12,476,811 | this patent Jun 2044 | Jun 2044 |
| Application 19/364,956 | Pending not computed | not computed |
| US 12,737,481 | In force Dec 2043 | Dec 2043 |
| Application 19/635,158 | 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 |
|---|---|---|---|
| Feb 9, 2024 Reel 66432, frame 27 | Esbensen, Daniel M.; Omohundro, Stephen | Quantum Properties Technology, LLC | Assignment of Assignor's Interest |
| Oct 21, 2025 Reel 73188, frame 460 | Esbensen, Daniel M.; Omohundro, Stephen | Quantum Properties Technology LLC | Corrective Assignment to Correct the Receiving Party Name Previously Recorded at Reel: 66432 Frame: 27. Assignor(S) Hereby Confirms the Assignment . |
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
Jun 2044
Term ends Jun 20, 2044. Maintenance fees still fall due before then
Note
The 176 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
How we rank
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.