Also listed on Celleration, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 3, 2028 · Medium confidence
20-year base term ends Jan 4, 2028
Why Medium: A parent in the chain could not be resolved.
Held by Sanuwave Health, Inc.
Filed Jul 17, 2008 as application 12/218,760 · Granted Jul 23, 2013
Base term plus 120 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Jan 4, 2008
Jan 4, 2008
Term ends
May 3, 2028
May 3, 2028
Granted
Jul 23, 2013
Jul 23, 2013
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
120
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
2
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 120 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 4, 2008, when application 12/006,739, the earliest non-provisional in its chain, was filed (this one was filed Jul 17, 2008); a parent in its chain could not be resolved (the next row) | Jan 4, 2028 | 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 | +120 days, USPTO patent term adjustment record | May 3, 2028 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 3, 2028 | Medium confidence |
This family
| Application 12/006,739 | Abandoned not computed | not computed |
| US 8,491,521 | this patent May 2028 | May 2028 |
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 |
|---|---|---|---|
| Oct 6, 2008 Reel 21642, frame 818 | Peterson, Michael T.; Van Houten, Alan Van | Celleration, Inc. | Assignment of Assignor's Interest |
| Dec 11, 2008 Reel 21978, frame 545 | Peterson, Michael T.; Van Houten, Alan | Celleration, Inc. | Re-Record to Correct the Name of the Second Assignor, Previously Recorded on Reel 021642 Frame 0818. |
| May 29, 2015 Reel 35745, frame 313 | Alqa Cedar, Inc. | Perceptive Credit Opportunities Fund, LP C/O Perceptive Advisors LLC | Security Interest |
| Jul 21, 2015 Reel 36140, frame 913 | Celleration, Inc. | Alliqua Biomedical, Inc. | Assignment of Assignor's Interest |
| Mar 28, 2016 Reel 38274, frame 778 | Celleration, Inc. | Alliqua Biomedical, Inc. | Change of Assignee Address |
| May 9, 2018 Reel 45756, frame 204 | Perceptive Credit Opportunities Fund, LP C/O Perceptive Advisors LLC | Alqa Cedar, Inc. | Release of Security Interest |
| Jul 8, 2020 Reel 53152, frame 144 | Alliqua Biomedical, Inc. | Celularity Inc. | Assignment of Assignor's Interest |
| Aug 7, 2020 Reel 53435, frame 842 | Sanuwave Health, Inc. | NH Expansion Credit Fund Holdings LP | Security Interest |
| Nov 6, 2020 Reel 54299, frame 846 | Celularity Inc. | Sanuwave Health, Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
May 2028
Term ends May 3, 2028. No further fees fall due before then
Note
The 120 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
17
later US patents cite this one
That is above the median of utility patents granted in 2013 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.