Term ends Nov 1, 2041 · Medium confidence
20-year base term ends Dec 5, 2039
Why Medium: A parent in the chain could not be resolved.
Held by Uroviu Corp.
Filed Jun 16, 2021 as application 17/349,674 · Granted Apr 8, 2025
Base term plus 697 days of patent term adjustment (USPTO delay)
Today
2019
2041
Clock starts
Dec 5, 2019
Dec 5, 2019
Term ends
Nov 1, 2041
Nov 1, 2041
Granted
Apr 8, 2025
Apr 8, 2025
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
697
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.
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 697 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Dec 5, 2019, when application 16/664,082, the earliest non-provisional in its chain, was filed (this one was filed Jun 16, 2021); a parent in its chain could not be resolved (the next row) | Dec 5, 2039 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +697 days, USPTO patent term adjustment record | Nov 1, 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 | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 1, 2041 | Medium confidence |
This family
| Application PCT/US2017/053171 | PCT application no patent term | no patent term |
| US 11,832,797 | In force Jan 2041 | Jan 2041 |
| Application PCT/US2019/036060 | PCT application no patent term | no patent term |
| US 11,071,442 | In force Dec 2039 | Dec 2039 |
| US 12,702,573 | In force May 2040 | May 2040 |
| US 12,268,358 | this patent Nov 2041 | Nov 2041 |
| US 11,350,816 | In force Jun 2041 | Jun 2041 |
| US 11,330,973 | In force Sep 2037 | Sep 2037 |
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 |
|---|---|---|---|
| Jun 16, 2021 Reel 56568, frame 131 | Ouyang, Xiaolong | Uroviu Corp. | Assignment of Assignor's 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.
What's changing
Nov 2041
Term ends Nov 1, 2041. Maintenance fees still fall due before then
Note
The 697 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
Fewer than half of the utility patents granted in 2025 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.