Collateral for a security interest recorded Jan 12, 2026 (Encina Private Credit SPV 2, LLC).
Lapsed Sep 20, 2026 on the fee record · Medium confidence
20-year base term ended Sep 27, 2026
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
First maintenance fee unpaid; grace period ended.
Held by Daramic, LLC
Filed Jul 23, 2019 as application 16/519,312 · Granted Sep 20, 2022
Base term, 20 years from filing, plus 38 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 20, 2026
2006
2026
Clock starts
Sep 27, 2006
Sep 27, 2006
No longer in force
Sep 20, 2026
Sep 20, 2026
Granted
Sep 20, 2022
Sep 20, 2022
Term would have run to
Nov 4, 2026
Nov 4, 2026
base term
patent term adjustment
after the term ends
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
38
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.
0 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Nov 4, 2026: its 20-year base term plus 38 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Sep 27, 2006, when application 11/535,701, the earliest non-provisional in its chain, was filed (this one was filed Jul 23, 2019) | Sep 27, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +38 days, USPTO patent term adjustment record | Nov 4, 2026 | 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 | 0 of 1 maintenance fees paid | lapsed Sep 20, 2026 | High confidence |
| Computed term end | The steps above, in order | Sep 20, 2026 | Medium confidence |
This family
| US 9,564,623 | Lapsed on the fee record Feb 2025 | Feb 2025 |
| US 10,361,416 | In force Nov 2026 | Nov 2026 |
| US 11,450,924 | this patent Sep 2026 | Sep 2026 |
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 |
|---|---|---|---|
| Feb 22, 2025 Reel 70299, frame 313 | Miller, Eric H.; Timmons, John Randolph; Whear, John Kevin | Daramic, LLC | Assignment of Assignor's Interest |
| Jan 12, 2026 Reel 74315, frame 795 | Daramic, LLC | Encina Private Credit SPV 2, LLC, as Collateral Agent | Short-Form Patents Security Agreement |
| Apr 22, 2026 Reel 75435, frame 811 | Encina Private Credit SPV 2, LLC, as Resigning Agent | Acf Finco I LP, as Successor Agent | Assignment of Security Interests in Patent Collateral |
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
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 38 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 Sep 20, 2026. We will not guess the cap.
Citations
0
later US patents cite this one
That is below the median 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
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.