Collateral for a security interest recorded Nov 1, 2023 (Triplepoint Venture Growth BDC Corp.).
Term ends Dec 1, 2039 · High confidence
20-year base term ends May 30, 2039
Held by Hydrow, Inc.
Filed Sep 14, 2020 as application 17/020,351 · Granted Feb 20, 2024
Base term plus 185 days of patent term adjustment (USPTO delay)
Today
2019
2039
Clock starts
May 30, 2019
May 30, 2019
Term ends
Dec 1, 2039
Dec 1, 2039
Granted
Feb 20, 2024
Feb 20, 2024
base term
patent term adjustment
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
185
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
5
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 185 days past its 20-year base term on prosecution delay. 0 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 May 30, 2019, when application 16/426,347, the earliest non-provisional in its chain, was filed (this one was filed Sep 14, 2020) | May 30, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +185 days, USPTO patent term adjustment record | Dec 1, 2039 | 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 | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 1, 2039 | High confidence |
This family
| US 10,828,531 | In force May 2039 | May 2039 |
| Application PCT/US2020/032132 | PCT application no patent term | no patent term |
| US 11,904,200 | this patent Dec 2039 | Dec 2039 |
| US 12,186,622 | In force May 2039 | May 2039 |
| US 12,779,278 | In force Sep 2039 | Sep 2039 |
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 |
|---|---|---|---|
| Nov 12, 2020 Reel 54350, frame 384 | Smith, Bruce | Hydrow, Inc. | Assignment of Assignor's Interest |
| Nov 12, 2020 Reel 54350, frame 525 | Renner, Klaus Heribert; Burke, William Churchill Taliaferro; Mur-miranda, Jose Oscar; Evans, Christopher Olin | Cooper Perkins, Inc. | Assignment of Assignor's Interest |
| Nov 12, 2020 Reel 54401, frame 67 | Cooper Perkins, Inc. | Hydrow, Inc. | Assignment of Assignor's Interest |
| May 16, 2023 Reel 63652, frame 703 | Hydrow, Inc. | First-Citizens Bank & Trust Company | Security Interest |
| Nov 1, 2023 Reel 65429, frame 758 | Hydrow, Inc. | Triplepoint Venture Growth BDC Corp. | Security Interest |
| Nov 16, 2023 Reel 65608, frame 61 | First-Citizens Bank & Trust Company | Hydrow, Inc. | Termination and Release of Intellectual Property Security Agreement at Reel/Frame No. 63652/0703 |
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
Dec 2039
Term ends Dec 1, 2039. Maintenance fees still fall due before then
Note
The 185 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.