Term ends Apr 26, 2037 · High confidence
20-year base term ends Aug 8, 2036
Held by Sanuwave, Inc.
Filed Jul 8, 2019 as application 16/504,583 · Granted Feb 22, 2022
Base term plus 261 days of patent term adjustment (USPTO delay)
Today
2016
2037
Clock starts
Aug 8, 2016
Aug 8, 2016
Term ends
Apr 26, 2037
Apr 26, 2037
Granted
Feb 22, 2022
Feb 22, 2022
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
261
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.
7
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 261 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 Aug 8, 2016, when application 15/230,765, the earliest non-provisional in its chain, was filed (this one was filed Jul 8, 2019) | Aug 8, 2036 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +261 days, USPTO patent term adjustment record | Apr 26, 2037 | 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 | Apr 26, 2037 | High confidence |
This family
| US 10,053,376 | Lapsed on the fee record Aug 2026 | Aug 2026 |
| US 10,246,349 | In force Sep 2036 | Sep 2036 |
| US 10,457,571 | In force Oct 2036 | Oct 2036 |
| US 10,562,793 | In force Aug 2036 | Aug 2036 |
| Application 16/504,607 | Abandoned not computed | not computed |
| US 11,254,589 | this patent Apr 2037 | Apr 2037 |
| US 12,110,238 | In force Oct 2036 | Oct 2036 |
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 |
|---|---|---|---|
| Aug 7, 2020 Reel 53436, frame 953 | Sanuwave, Inc. | NH Expansion Credit Fund Holdings LP | Security Interest |
| Sep 26, 2025 Reel 72385, frame 128 | Sanuwave, Inc. | Jpmorgan Chase Bank, N.a. | Security Interest |
| Sep 30, 2025 Reel 72417, frame 134 | NH Expansion Credit Fund Holdings LP | Sanuwave, 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
Apr 2037
Term ends Apr 26, 2037. Maintenance fees still fall due before then
Note
The 261 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is above the median 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.