Term ends Jan 22, 2040 · Medium confidence
20-year base term ends Jan 22, 2040
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 12,276,479), so the cap could be lower.
Held by Grace Engineering Corp.
Filed Mar 18, 2025 as application 19/082,566 · Granted Jun 16, 2026
Base term, 20 years from filing
Today
2020
2040
Clock starts
Jan 22, 2020
Jan 22, 2020
Term ends
Jan 22, 2040
Jan 22, 2040
Granted
Jun 16, 2026
Jun 16, 2026
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,287,220, US 11,619,468, US 11,852,442, US 12,276,479, to Jan 22, 2040. The term already ends on or before that date, so the cap shortened nothing.
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.
8
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Jan 22, 2020, when application 16/749,153, the earliest non-provisional in its chain, was filed (this one was filed Mar 18, 2025) | Jan 22, 2040 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,287,220, US 11,619,468, US 11,852,442, US 12,276,479) | resolves to Jan 22, 2040, no earlier than this term, so no change | Medium 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 | Jan 22, 2040 | Medium confidence |
This family
| US 11,262,164 | In force Jan 2040 | Jan 2040 |
| US 11,287,220 | In force Oct 2040 | Oct 2040 |
| Application 17/533,466 | Abandoned not computed | not computed |
| US 11,619,468 | In force Jan 2040 | Jan 2040 |
| US 11,852,442 | In force Jan 2040 | Jan 2040 |
| US 12,276,479 | In force no later than Jan 2040 | no later than Jan 2040 |
| US 12,656,082 | this patent Jan 2040 | Jan 2040 |
| Application 19/666,969 | 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 |
|---|---|---|---|
| Mar 18, 2025 Reel 70544, frame 776 | Grace, Nathaniel E. | Grace Engineering 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.
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Alerts on its grants, lapses and transfers.
What's changing
Jan 2040
Term ends Jan 22, 2040. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,287,220, US 11,619,468, US 11,852,442, US 12,276,479, ends no earlier than this term, so it caps nothing.
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.