Lapsed May 17, 2026 on the fee record · High confidence
20-year base term ends Jun 16, 2037
First maintenance fee unpaid; grace period ended.
Held by Calysta, Inc.
Filed Jan 28, 2020 as application 16/774,991 · Granted May 17, 2022
Base term, 20 years from filing
Today
Lapsed May 17, 2026
2017
2037
Clock starts
Jun 16, 2017
Jun 16, 2017
No longer in force
May 17, 2026
May 17, 2026
Granted
May 17, 2022
May 17, 2022
Term would have run to
Jun 16, 2037
Jun 16, 2037
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,538,730, to Jun 16, 2037. The term already ends on or before that date, so the cap shortened nothing.
0 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.
Its term would have run to Jun 16, 2037: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Jun 16, 2017, when application 15/625,858, the earliest non-provisional in its chain, was filed (this one was filed Jan 28, 2020) | Jun 16, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,538,730) | resolves to Jun 16, 2037, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed May 17, 2026 | High confidence |
| Computed term end | The steps above, in order | May 17, 2026 | High confidence |
This family
| US 10,570,364 | In force Aug 2037 | Aug 2037 |
| US 10,538,730 | In force Jun 2037 | Jun 2037 |
| US 11,332,706 | this patent May 2026 | May 2026 |
| US 12,116,563 | In force Aug 2037 | Aug 2037 |
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 |
|---|---|---|---|
| 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 |
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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,538,730, ends no earlier than this term, so it caps nothing.
Citations
9
later US patents cite this one
That is top 25% of utility patents granted in 2022 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.