Term ends no later than Dec 6, 2028 · Low confidence
20-year base term ends Jul 16, 2028
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 SolAero Technologies Corp.
Filed Feb 18, 2015 as application 14/625,314 · Granted Mar 21, 2017
Base term plus 143 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Jul 16, 2008
Jul 16, 2008
Ends no later than
Dec 6, 2028
Dec 6, 2028
Granted
Mar 21, 2017
Mar 21, 2017
base term
patent term adjustment
fee events
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
143
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.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
6
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 143 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. 2 of 2 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 Jul 16, 2008, when application 12/218,582, the earliest non-provisional in its chain, was filed (this one was filed Feb 18, 2015); a parent in its chain could not be resolved (the next row) | Jul 16, 2028 | 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 | +143 days, USPTO patent term adjustment record | Dec 6, 2028 | 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 | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Dec 6, 2028 | Low confidence |
This family
| Application 12/218,582 | Abandoned not computed | not computed |
| Application 12/258,190 | Abandoned not computed | not computed |
| US 8,753,918 | In force Jul 2028 | Jul 2028 |
| US 9,287,438 | In force Mar 2030 | Mar 2030 |
| US 8,987,042 | In force no later than Jul 2028 | no later than Jul 2028 |
| US 9,601,652 | this patent no later than Dec 2028 | no later than Dec 2028 |
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 |
|---|---|---|---|
| Sep 10, 2018 Reel 47341, frame 617 | SolAero Technologies Corp. | Citizens Bank of Pennsylvania, as Administrative Agent | Security Interest |
| Oct 17, 2018 Reel 47246, frame 418 | SolAero Technologies Corp. | Citizens Bank of Pennsylvania, as Administrative Agent for the Secured Parties | Security Interest |
| Apr 12, 2019 Reel 48877, frame 802 | Citizens Bank, N.A. (Successor by Merger to Citizens Bank of Pennsylvania), as Administrative Agent | SolAero Technologies Corp. | Notice of Release of Security Interest in Patents |
| Apr 17, 2019 Reel 48930, frame 952 | SolAero Technologies Corp. | Citizens Bank, N.A., as Administrative Agent | 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.
What's changing
Dec 2028
Term ends no later than Dec 6, 2028. No further fees 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 143 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 Dec 6, 2028. We will not guess the cap.
Citations
8
later US patents cite this one
That is above the median of utility patents granted in 2017 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.