Collateral for a security interest recorded Jun 30, 2025 (U.S. Bank Trust Company, National Association).
Term ends May 12, 2036 · High confidence
20-year base term ends Sep 13, 2033
Held by Stem, Inc.
Filed Oct 23, 2013 as application 14/061,643 · Granted Aug 20, 2019
Base term plus 972 days of patent term adjustment (USPTO delay)
Today
2013
2036
Clock starts
Sep 13, 2013
Sep 13, 2013
Term ends
May 12, 2036
May 12, 2036
Granted
Aug 20, 2019
Aug 20, 2019
base term
patent term adjustment
fee events
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
972
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.
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 972 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 Sep 13, 2013, when application 14/026,993, the earliest non-provisional in its chain, was filed (this one was filed Oct 23, 2013) | Sep 13, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +972 days, USPTO patent term adjustment record | May 12, 2036 | 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 | May 12, 2036 | High confidence |
This family
| US 9,634,508 | In force Feb 2035 | Feb 2035 |
| US 10,389,126 | this patent May 2036 | May 2036 |
| US 10,756,543 | In force Jan 2035 | Jan 2035 |
| US 11,201,491 | In force Feb 2035 | Feb 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 |
|---|---|---|---|
| Oct 24, 2013 Reel 31473, frame 670 | Kearns, Ben; Detmers, James W.; Burlinson, Jon; Stevens, Drew | Stem, Inc. | Assignment of Assignor's Interest |
| Jan 27, 2020 Reel 51629, frame 400 | Stem, Inc. | Generate Lending, LLC | Security Interest |
| May 15, 2020 Reel 52677, frame 27 | Stem, Inc. | Ares Climate Infrastructure Partners, L.P., as Administrative Agent | Security Interest |
| May 20, 2020 Reel 52707, frame 863 | Stem, Inc. | Generate Lending, LLC | Security Interest |
| Apr 28, 2021 Reel 56079, frame 736 | Ares Climate Infrastructure Partners, L.P. | Stem, Inc. | Release of Patent Security Agreement Recorded at Reel 052677/FRAME 0027 |
| May 3, 2021 Reel 56121, frame 527 | Generate Lending, LLC | Stem, Inc. | Release of Intellectual Property Security Interest Recorded at Reel 051629/FRAME 0400 |
| May 3, 2021 Reel 56121, frame 577 | Generate Lending, LLC | Stem, Inc. | Release of Intellectual Property Security Interest Recorded at Reel 052707/FRAME 0863 |
| Jun 30, 2025 Reel 71569, frame 935 | Stem, Inc. | U.S. Bank Trust Company, National Association | 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
May 2036
Term ends May 12, 2036. Maintenance fees still fall due before then
Note
The 972 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
55
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.