Term ends Apr 8, 2037 · High confidence
20-year base term ends Oct 7, 2034
Held by Upstart Power, Inc.
Filed Nov 7, 2014 as application 14/399,795 · Granted Oct 15, 2019
Base term plus 914 days of patent term adjustment (USPTO delay)
Today
2014
2037
Clock starts
Oct 7, 2014
Oct 7, 2014
Term ends
Apr 8, 2037
Apr 8, 2037
Granted
Oct 15, 2019
Oct 15, 2019
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
914
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
5
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 914 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 Oct 7, 2014, when application PCT/US2014/059447, the earliest non-provisional in its chain, was filed (this one was filed Nov 7, 2014) | Oct 7, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +914 days, USPTO patent term adjustment record | Apr 8, 2037 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 8, 2037 | High confidence |
This family
| Application PCT/US2014/059447 | PCT application no patent term | no patent term |
| US 10,446,858 | this patent Apr 2037 | Apr 2037 |
| US 10,916,784 | In force Oct 2034 | Oct 2034 |
| US 11,784,331 | In force Oct 2035 | Oct 2035 |
| US 12,512,488 | In force Mar 2035 | Mar 2035 |
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 |
|---|---|---|---|
| Nov 26, 2014 Reel 34268, frame 592 | Palumbo, Nathan; Osenar, Paul; Persky, Joshua | Protonex Technology Corporation | Assignment of Assignor's Interest |
| May 21, 2015 Reel 35748, frame 937 | Protonex Technology Corporation | Silicon Valley Bank | Security Agreement |
| Sep 28, 2015 Reel 36700, frame 203 | Silicon Valley Bank | Protonex Technology Corporation | Release of Security Interest |
| Dec 21, 2018 Reel 47841, frame 877 | Protonex Technology Corporation | Upstart Power, Inc. | Assignment of Assignor's Interest |
| Jan 13, 2020 Reel 51497, frame 597 | Upstart Power, Inc. | Windsail Capital Fund, L.p. | Security Interest |
| Apr 13, 2021 Reel 55899, frame 517 | Windsail Capital Fund, L.p. | Upstart Power, Inc. | Release of 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
Apr 2037
Term ends Apr 8, 2037. Maintenance fees still fall due before then
Note
The 914 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
43
later US patents cite this one
That is top 5% of utility patents granted in 2019 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.