Term ends Apr 18, 2043 · Low confidence
20-year base term ends Apr 18, 2043
Filed Aug 15, 2024 as application 18/806,610 · Granted Jan 13, 2026
Base term, 20 years from filing
Today
2023
2043
Clock starts
Apr 18, 2023
Apr 18, 2023
Term ends
Apr 18, 2043
Apr 18, 2043
Granted
Jan 13, 2026
Jan 13, 2026
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 12,110,770, to Apr 18, 2043. 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.
5
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: Low. 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 Apr 18, 2023, when application 18/302,628, the earliest non-provisional in its chain, was filed (this one was filed Aug 15, 2024); a parent in its chain could not be resolved (the next row) | Apr 18, 2043 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 12,110,770) | resolves to Apr 18, 2043, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: 18302628, 18302628 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Apr 18, 2043 | Low confidence |
This family
| US 11,846,164 | In force Apr 2043 | Apr 2043 |
| Application PCT/US2023/019139 | PCT application no patent term | no patent term |
| US 12,110,770 | In force Apr 2043 | Apr 2043 |
| US 12,523,128 | this patent Apr 2043 | Apr 2043 |
| Application 19/420,249 | 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 |
|---|---|---|---|
| Aug 15, 2024 Reel 68304, frame 65 | Blois, Stanley Jon; Griffin, Lawrence Gene; Janke, Ian Graham; Keyes, Cullen Craig | Defiant Engineering, LLC | Assignment of Assignor's Interest |
| Nov 5, 2025 Reel 73486, frame 252 | Defiant Engineering, LLC | Defiant Precision Technologies, LLC | Change of Name |
| Nov 19, 2025 Reel 73606, frame 433 | Defiant Engineering, LLC | Defiant Precision Technologies, LLC | Change of Name |
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
Apr 2043
Term ends Apr 18, 2043. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 12,110,770, 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.