Term ends Aug 10, 2038 · High confidence
20-year base term ends Aug 23, 2037
Held by Textron Aviation Inc.
Filed Aug 23, 2017 as application 15/683,957 · Granted May 17, 2022
Base term plus 352 days of patent term adjustment (USPTO delay)
Today
2017
2038
Clock starts
Aug 23, 2017
Aug 23, 2017
Term ends
Aug 10, 2038
Aug 10, 2038
Granted
May 17, 2022
May 17, 2022
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
352
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
2
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 352 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 Aug 23, 2017, when this application, 15/683,957, was filed | Aug 23, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +352 days, USPTO patent term adjustment record | Aug 10, 2038 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 10, 2038 | High confidence |
This family
| US 11,331,867 | this patent Aug 2038 | Aug 2038 |
| US 12,053,941 | In force Oct 2038 | Oct 2038 |
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 26, 2018 Reel 45035, frame 19 | Textron Aviation Inc. | Textron Aviation Rhode Island Inc. | Assignment of Assignor's Interest |
| Feb 26, 2018 Reel 45035, frame 192 | Textron Aviation Rhode Island Inc. | Textron Innovations, Inc. | Assignment of Assignor's Interest |
| May 24, 2018 Reel 45892, frame 522 | Gintert, Lawrence Arthur; Nelson, Isaac William; Skidmore, Herbert Lee; McKown, Michael Preston; Stephens, Larry Gene | Cessna Aircraft Company | Assignment of Assignor's Interest |
| May 24, 2018 Reel 47051, frame 285 | Cessna Aircraft Company | Textron Aviation Inc. | Merger |
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 2038
Term ends Aug 10, 2038. Maintenance fees still fall due before then
Note
The 352 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is above the median of utility patents granted in 2022 in our data, the only group it is compared against.
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.