Collateral for a security interest recorded May 12, 2026 (Fifth Third Bank, National Association).
Term ends no later than Jan 24, 2037 · Medium confidence
20-year base term ends Jan 13, 2037
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Zev Technologies, LLC
Filed Feb 22, 2021 as application 17/181,310 · Granted Dec 13, 2022
Base term plus 11 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
Jan 13, 2017
Jan 13, 2017
Ends no later than
Jan 24, 2037
Jan 24, 2037
Granted
Dec 13, 2022
Dec 13, 2022
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
11
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
7
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 11 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 1 of 3 maintenance fees is 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 13, 2017, when application 15/406,111, the earliest non-provisional in its chain, was filed (this one was filed Feb 22, 2021) | Jan 13, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +11 days, USPTO patent term adjustment record | Jan 24, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Jan 24, 2037 | Medium confidence |
This family
| Application 15/406,111 | Abandoned not computed | not computed |
| US 10,119,777 | In force Jan 2037 | Jan 2037 |
| Application PCT/US2018/018093 | PCT application no patent term | no patent term |
| US 10,955,209 | In force Jan 2037 | Jan 2037 |
| US 11,525,645 | this patent no later than Jan 2037 | no later than Jan 2037 |
| US 12,287,164 | In force Jan 2037 | Jan 2037 |
| US 12,742,605 | In force Jan 2037 | Jan 2037 |
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 13, 2024 Reel 68471, frame 588 | Zev Technologies, Inc. | Zev Technologies, LLC | Assignment of Assignor's Interest |
| May 4, 2026 Reel 74556, frame 456 | Wolf, Alec | Zev Technologies, Inc. | Assignment of Assignor's Interest |
| May 12, 2026 Reel 75562, frame 524 | Silencerco Weapons Research, LLC; Unity Tactical LLC; Zev Technologies, LLC; Syndicate Optics Research, LLC; Sicosyndicate, LLC | Fifth Third Bank, National Association | Security 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
Jan 2037
Term ends no later than Jan 24, 2037. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 11 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jan 24, 2037. We will not guess the cap.
Citations
6
later US patents cite this one
That is top 25% 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.