Collateral for a security interest recorded Jun 30, 2025 (U.S. Bank Trust Company, National Association).
Term ends Aug 14, 2033 · Medium confidence
20-year base term ends Aug 14, 2033
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,406,094), so the cap could be lower.
Held by Stem, Inc.
Filed Aug 13, 2020 as application 16/993,183 · Granted Aug 1, 2023
Base term plus 291 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2013
2033
Clock starts
Aug 14, 2013
Aug 14, 2013
Term ends
Aug 14, 2033
Aug 14, 2033
Granted
Aug 1, 2023
Aug 1, 2023
base term
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
291
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,406,094.
0 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 291 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 2 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 Aug 14, 2013, when application 13/967,256, the earliest non-provisional in its chain, was filed (this one was filed Aug 13, 2020) | Aug 14, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +291 days, USPTO patent term adjustment record | Jun 1, 2034 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,406,094) | capped to Aug 14, 2033 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 14, 2033 | Medium confidence |
This family
| US 9,406,094 | In force no later than Aug 2033 | no later than Aug 2033 |
| US 9,418,392 | In force no later than Apr 2034 | no later than Apr 2034 |
| US 8,880,233 | In force Aug 2033 | Aug 2033 |
| US 10,747,252 | In force Aug 2033 | Aug 2033 |
| US 11,714,441 | this patent Aug 2033 | Aug 2033 |
| Application 18/360,743 | 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 |
|---|---|---|---|
| Aug 18, 2020 Reel 53524, frame 233 | Kearns, Ben; Burlinson, Jon; Stevens, Drew | Stem, Inc. | Assignment of Assignor's Interest |
| 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
Aug 2033
Term ends Aug 14, 2033. Maintenance fees still fall due before then
Note
The 291 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,406,094.
Citations
8
later US patents cite this one
That is top 10% of utility patents granted in 2023 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.