Collateral for a security interest recorded Feb 29, 2024 (Ocean 14 Capital Fund 1 SCSP).
Term ends Jul 20, 2033 · High confidence
20-year base term ends Jul 12, 2033
Held by Calysta, Inc.
Filed Jul 12, 2013 as application 13/941,027 · Granted Jun 21, 2016
Base term plus 8 days of patent term adjustment (USPTO delay)
Today
2013
2033
Clock starts
Jul 12, 2013
Jul 12, 2013
Term ends
Jul 20, 2033
Jul 20, 2033
Granted
Jun 21, 2016
Jun 21, 2016
base term
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
8
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.
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 8 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 Jul 12, 2013, when this application, 13/941,027, was filed | Jul 12, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +8 days, USPTO patent term adjustment record | Jul 20, 2033 | 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 | Jul 20, 2033 | High confidence |
This family
| US 9,371,549 | this patent Jul 2033 | Jul 2033 |
| Application 14/670,740 | Abandoned not computed | not computed |
| US 9,410,168 | In force no later than Jul 2033 | no later than Jul 2033 |
| Application 15/187,509 | Abandoned not computed | not computed |
| Application 15/187,492 | Abandoned not computed | not computed |
| Application 15/882,393 | 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 |
|---|---|---|---|
| Oct 1, 2013 Reel 31322, frame 751 | Silverman, Joshua; Resnick, Sol M.; Mendez, Michael; Saville, Renee; Lee, Sungwon; Nguyen, Luan | Calysta Energy, Inc. | Assignment of Assignor's Interest |
| Jul 14, 2014 Reel 33319, frame 147 | Calysta Energy, Inc. | Calysta, Inc. | Change of Name |
| Aug 27, 2021 Reel 57337, frame 355 | Calysta, Inc. | Venture Lending & Leasing IX, Inc. | Security Interest |
| Feb 29, 2024 Reel 66607, frame 888 | Calysta, Inc. | Ocean 14 Capital Fund 1 SCSP | Security Interest |
| Oct 7, 2024 Reel 69116, frame 150 | Calysta, Inc. | Aqua-Spark Calysta LLC | Security Interest |
| Sep 12, 2025 Reel 72242, frame 47 | Venture Lending & Leasing IX, Inc. | Calysta, 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
Jul 2033
Term ends Jul 20, 2033. Maintenance fees still fall due before then
Note
The 8 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
25
later US patents cite this one
That is top 25% of utility patents granted in 2016 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.