Term ends Apr 26, 2035 · High confidence
20-year base term ends Sep 5, 2033
Held by Enecsys UK Limited
Filed Sep 5, 2013 as application 14/019,470 · Granted Jan 30, 2018
Base term plus 598 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Sep 5, 2013
Sep 5, 2013
Term ends
Apr 26, 2035
Apr 26, 2035
Granted
Jan 30, 2018
Jan 30, 2018
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
598
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
2
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 598 days past its 20-year base term on prosecution delay. 2 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 Sep 5, 2013, when this application, 14/019,470, was filed | Sep 5, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +598 days, USPTO patent term adjustment record | Apr 26, 2035 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 26, 2035 | High confidence |
This family
| US 9,882,507 | this patent Apr 2035 | Apr 2035 |
| Application 15/850,263 | Abandoned 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 |
|---|---|---|---|
| Sep 5, 2014 Reel 33677, frame 446 | Jungreis, Aaron M.; Garrity, Paul | Enecsys Limited | Assignment of Assignor's Interest |
| Aug 14, 2015 Reel 36329, frame 598 | Enecsys Limited | Solarcity Corporation | Assignment of Assignor's Interest |
| Oct 6, 2015 Reel 36741, frame 578 | Enecsys Limited | Enecsys UK Limited | Change of Name |
| Oct 6, 2015 Reel 36805, frame 877 | Enecsys UK Limited | Solarcity Corporation | Corrective Assignment to Correct the Conveying Party from "Enecsys Limited" to "Enecsys Uk Limited" Previously Recorded on Reel 036329 Frame 0598. Assignor(S) Hereby Confirms the Assignment. |
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 2035
Term ends Apr 26, 2035. Maintenance fees still fall due before then
Note
The 598 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
164
later US patents cite this one
That is top 1% of utility patents granted in 2018 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.