Term ends Aug 28, 2038 · High confidence
20-year base term ends Aug 24, 2038
Held by Kerr Machine Co.
Filed Aug 24, 2018 as application 16/111,754 · Granted Aug 3, 2021
Base term plus 4 days of patent term adjustment (USPTO delay)
Today
2018
2038
Clock starts
Aug 24, 2018
Aug 24, 2018
Term ends
Aug 28, 2038
Aug 28, 2038
Granted
Aug 3, 2021
Aug 3, 2021
base term
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
4
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.
36
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 4 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 24, 2018, when this application, 16/111,754, was filed | Aug 24, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +4 days, USPTO patent term adjustment record | Aug 28, 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 28, 2038 | High confidence |
This family
| US 10,288,178 | In force Sep 2036 | Sep 2036 |
| US 10,895,325 | In force Sep 2036 | Sep 2036 |
| Application 15/955,128 | Abandoned not computed | not computed |
| US 10,670,013 | In force Sep 2038 | Sep 2038 |
| US 10,648,490 | In force Jul 2038 | Jul 2038 |
| US 11,078,903 | this patent Aug 2038 | Aug 2038 |
| Application 16/169,663 | Abandoned not computed | not computed |
| Application 16/216,709 | Abandoned not computed | not computed |
8 of 36 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 |
|---|---|---|---|
| Sep 20, 2018 Reel 46920, frame 769 | Nowell, Mark S.; Barnett, Christopher Todd; Foster, Kelcy Jake; May, Michael Eugene; Thomas, Michael Cole | Kerr Machine Co. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Aug 2038
Term ends Aug 28, 2038. Maintenance fees still fall due before then
Note
The 4 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
114
later US patents cite this one
That is top 1% 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.