Collateral for a security interest recorded Mar 5, 2026 (Hercules Capital, Inc.).
Term ends no later than Apr 23, 2042 · Medium confidence
20-year base term ends Oct 14, 2041
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 Expel, Inc.
Filed Oct 20, 2022 as application 17/970,069 · Granted Oct 1, 2024
Base term plus 191 days of patent term adjustment (USPTO delay)
Today
2021
2042
Clock starts
Oct 14, 2021
Oct 14, 2021
Ends no later than
Apr 23, 2042
Apr 23, 2042
Granted
Oct 1, 2024
Oct 1, 2024
base term
patent term adjustment
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
191
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 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 runs 191 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. 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 Oct 14, 2021, when application 17/501,708, the earliest non-provisional in its chain, was filed (this one was filed Oct 20, 2022) | Oct 14, 2041 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +191 days, USPTO patent term adjustment record | Apr 23, 2042 | 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 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Apr 23, 2042 | Medium confidence |
This family
| US 11,310,270 | In force Oct 2041 | Oct 2041 |
| US 11,509,689 | In force Oct 2041 | Oct 2041 |
| US 12,107,886 | this patent no later than Apr 2042 | no later than Apr 2042 |
| US 12,120,147 | In force Oct 2041 | Oct 2041 |
| US 12,771,721 | In force Oct 2041 | Oct 2041 |
| US 12,388,870 | In force Oct 2041 | Oct 2041 |
| US 12,531,903 | In force Oct 2041 | Oct 2041 |
| Application 19/421,364 | 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 |
|---|---|---|---|
| Oct 20, 2022 Reel 61486, frame 540 | Weber, Elisabeth; Silberman, Peter; Field, Shamus | Expel, Inc. | Assignment of Assignor's Interest |
| Feb 13, 2023 Reel 62741, frame 584 | Expel, Inc. | Jpmorgan Chase Bank, N.a. | Intellectual Property Security Agreement |
| Feb 23, 2026 Reel 73866, frame 99 | Jpmorgan Chase Bank, N.a. | Expel, Inc. | Release of Security Interest |
| Mar 5, 2026 Reel 75041, frame 970 | Expel, Inc. | Hercules Capital, Inc. | Intellectual Property Security Agreement |
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 2042
Term ends no later than Apr 23, 2042. 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 191 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 Apr 23, 2042. We will not guess the cap.
Citations
1
later US patent cites this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.