Term ends Dec 18, 2037 · High confidence
20-year base term ends Jul 1, 2036
Held by Textron Innovations Inc.
Filed May 7, 2018 as application 15/972,481 · Granted Apr 20, 2021
Base term plus 535 days of patent term adjustment (USPTO delay)
Today
2016
2037
Clock starts
Jul 1, 2016
Jul 1, 2016
Term ends
Dec 18, 2037
Dec 18, 2037
Granted
Apr 20, 2021
Apr 20, 2021
base term
patent term adjustment
fee events
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
535
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.
37
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 535 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 Jul 1, 2016, when application 15/200,163, the earliest non-provisional in its chain, was filed (this one was filed May 7, 2018) | Jul 1, 2036 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +535 days, USPTO patent term adjustment record | Dec 18, 2037 | 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 | Dec 18, 2037 | High confidence |
This family
| US 9,963,228 | In force Feb 2037 | Feb 2037 |
| US 10,059,428 | In force Nov 2037 | Nov 2037 |
| US 10,287,012 | In force Jul 2037 | Jul 2037 |
| Application 15/459,781 | Abandoned not computed | not computed |
| US 10,501,193 | In force Jan 2037 | Jan 2037 |
| US 10,752,373 | Lapsed on the fee record Aug 2024 | Aug 2024 |
| US 10,597,164 | In force Sep 2037 | Sep 2037 |
| US 10,981,661 | this patent Dec 2037 | Dec 2037 |
8 of 37 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 |
|---|---|---|---|
| May 7, 2018 Reel 45732, frame 386 | Oldroyd, Paul K.; McCullough, John Richard | Bell Helicopter Textron Inc. | Assignment of Assignor's Interest |
| Nov 5, 2019 Reel 50922, frame 223 | Bell Helicopter Textron Inc. | Textron Innovations Inc. | 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
Dec 2037
Term ends Dec 18, 2037. Maintenance fees still fall due before then
Note
The 535 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
50
later US patents cite this one
That is top 5% of utility patents granted in 2021 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.