Collateral for a security interest recorded Dec 23, 2025 (Triplepoint Capital LLC).
Term ends Sep 21, 2040 · High confidence
20-year base term ends Sep 21, 2040
Held by Sonatus, Inc.
Filed Sep 21, 2020 as application 17/027,187 · Granted Jan 18, 2022
Base term, 20 years from filing
Today
2020
2040
Clock starts
Sep 21, 2020
Sep 21, 2020
Term ends
Sep 21, 2040
Sep 21, 2040
Granted
Jan 18, 2022
Jan 18, 2022
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
None
Term adjustment
No prosecution delay on this record.
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.
78
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 is its 20-year base term, with no adjustment for 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 21, 2020, when this application, 17/027,187, was filed | Sep 21, 2040 | 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 | 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 21, 2040 | High confidence |
This family
| US 11,411,823 | In force Sep 2040 | Sep 2040 |
| US 11,228,496 | this patent Sep 2040 | Sep 2040 |
| Application PCT/US2020/051825 | PCT application no patent term | no patent term |
| Application PCT/US2020/051817 | PCT application no patent term | no patent term |
| Application PCT/US2021/021421 | PCT application no patent term | no patent term |
| US 11,538,287 | In force Sep 2040 | Sep 2040 |
| US 11,349,717 | In force Sep 2040 | Sep 2040 |
| US 11,165,651 | In force Sep 2040 | Sep 2040 |
8 of 78 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 |
|---|---|---|---|
| Feb 12, 2021 Reel 55242, frame 129 | Fang, Yu; Chen, Yixiang; Zong, Xuanran; Reed, Robin; Ling, Andrew; Trenchard, Troy Michael; Cardenas, Jan | Sonatus, Inc. | Assignment of Assignor's Interest |
| Nov 19, 2021 Reel 58169, frame 921 | Sonatus, Inc. | Wti Fund X, Inc. | Security Interest |
| Dec 17, 2025 Reel 73249, frame 253 | Wti Fund X, Inc. | Sonatus, Inc. | Release of Security Interest |
| Dec 23, 2025 Reel 74052, frame 671 | Sonatus, Inc.; Sonatus International Holding Inc.; Sonatus Ireland, Limited | Triplepoint Capital 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.
What's changing
Sep 2040
Term ends Sep 21, 2040. Maintenance fees still fall due before then
Citations
99
later US patents cite this one
That is top 1% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.