Collateral for a security interest recorded Apr 3, 2025 (Keyframe Capital Partners, L.P.).
Term ends Feb 9, 2042 · High confidence
20-year base term ends Feb 9, 2042
Held by Element Energy, Inc.
Filed Feb 9, 2023 as application 18/166,916 · Granted Jul 14, 2026
Base term plus 827 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2022
2042
Clock starts
Feb 9, 2022
Feb 9, 2022
Term ends
Feb 9, 2042
Feb 9, 2042
Granted
Jul 14, 2026
Jul 14, 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
827
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 11,699,909, US 12,155,241.
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.
4
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 827 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 3 maintenance fees are 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 Feb 9, 2022, when application 17/650,472, the earliest non-provisional in its chain, was filed (this one was filed Feb 9, 2023) | Feb 9, 2042 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +827 days, USPTO patent term adjustment record | May 16, 2044 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,699,909, US 12,155,241) | capped to Feb 9, 2042 | High 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 | Feb 9, 2042 | High confidence |
This family
| US 11,699,909 | In force Feb 2042 | Feb 2042 |
| Application PCT/US2023/062273 | PCT application no patent term | no patent term |
| US 12,683,412 | this patent Feb 2042 | Feb 2042 |
| US 12,155,241 | In force Feb 2042 | Feb 2042 |
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 |
|---|---|---|---|
| Apr 13, 2023 Reel 63318, frame 456 | Element Energy, Inc. | Keyframe Capital Partners, L.p. | Security Interest |
| Jun 18, 2023 Reel 63981, frame 793 | Kahn, Seth Marshall; Cammi, Corrado; Stratakos, Anthony John; Fasching, Rainer Johannes | Element Energy, Inc. | Assignment of Assignor's Interest |
| Apr 3, 2025 Reel 70731, frame 176 | Element Energy, Inc. | Keyframe Capital Partners, L.p. | 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
Feb 2042
Term ends Feb 9, 2042. Maintenance fees still fall due before then
Note
The 827 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 11,699,909, US 12,155,241.
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.