Collateral for a security interest recorded Aug 21, 2026 (Cathay Bank).
Term ends Sep 9, 2041 · High confidence
20-year base term ends Mar 31, 2041
Held by Botrista, Inc.
Filed Mar 31, 2021 as application 17/218,314 · Granted Mar 7, 2023
Base term plus 162 days of patent term adjustment (USPTO delay)
Today
2021
2041
Clock starts
Mar 31, 2021
Mar 31, 2021
Term ends
Sep 9, 2041
Sep 9, 2041
Granted
Mar 7, 2023
Mar 7, 2023
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
162
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.
27
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 162 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 Mar 31, 2021, when this application, 17/218,314, was filed | Mar 31, 2041 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +162 days, USPTO patent term adjustment record | Sep 9, 2041 | 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 | Sep 9, 2041 | High confidence |
This family
| US 11,597,642 | this patent Sep 2041 | Sep 2041 |
| US 11,814,280 | In force Dec 2041 | Dec 2041 |
| US 12,037,236 | In force Mar 2042 | Mar 2042 |
| US 12,037,235 | In force Jan 2042 | Jan 2042 |
| US 11,807,511 | In force Mar 2041 | Mar 2041 |
| US 11,787,681 | In force Mar 2041 | Mar 2041 |
| US 11,787,682 | In force Mar 2041 | Mar 2041 |
| US 12,077,424 | In force no later than Mar 2041 | no later than Mar 2041 |
8 of 27 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Apr 1, 2021 Reel 55793, frame 812 | Kuo, Wu-chou; Lee, Yu-min; Chen, Jia-hui; Su, Yen-jui | Botrista Technology, Inc. | Assignment of Assignor's Interest |
| Jul 31, 2023 Reel 64441, frame 798 | Botrista Technology, Inc. | Cathay Bank | Security Interest |
| Apr 11, 2024 Reel 67070, frame 485 | Botrista Technology, Inc. | Botrista, Inc. | Change of Name |
| Feb 13, 2025 Reel 70228, frame 600 | Botrista, Inc., a de Corporation, F/K/A Botrista Technology, Inc. | East West Bank, a California Banking Corporation | Security Interest |
| Aug 20, 2026 Reel 75725, frame 782 | Cathay Bank | Botrista, Inc. | Release of Security Interest |
| Aug 21, 2026 Reel 76262, frame 687 | Botrista, Inc. | Cathay Bank | Security Interest |
| Sep 14, 2026 Reel 76484, frame 140 | East West Bank | Botrista, Inc., a de Corporation, F/K/A Botrista Technology, 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
Sep 2041
Term ends Sep 9, 2041. Maintenance fees still fall due before then
Note
The 162 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median 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.