Collateral for a security interest recorded Apr 25, 2025 (Barings Finance LLC).
Term ends May 30, 2028 · High confidence
20-year base term ends Jan 11, 2028
Held by Nexolve Holding Company, LLC
Filed Jan 11, 2008 as application 11/972,768 · Granted Nov 17, 2009
Base term plus 140 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Jan 11, 2008
Jan 11, 2008
Term ends
May 30, 2028
May 30, 2028
Granted
Nov 17, 2009
Nov 17, 2009
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
140
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.
6
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 140 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 11, 2008, when this application, 11/972,768, was filed | Jan 11, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +140 days, USPTO patent term adjustment record | May 30, 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 30, 2028 | High confidence |
This family
| Application PCT/US2008/050891 | PCT application no patent term | no patent term |
| US 7,619,042 | this patent May 2028 | May 2028 |
| US 8,053,492 | In force no later than May 2028 | no later than May 2028 |
| US 8,048,938 | In force May 2028 | May 2028 |
| US 8,017,698 | In force May 2028 | May 2028 |
| US 8,309,627 | In force no later than Jan 2028 | no later than Jan 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 |
|---|---|---|---|
| Jan 11, 2008 Reel 20356, frame 814 | Poe, Garrett D., DR.; Farmer, Brandon S., DR. | Mantech SRS Technologies, Inc. | Assignment of Assignor's Interest |
| Mar 9, 2009 Reel 22367, frame 30 | Mantech SRS Technologies, Inc. | Nexolve Corporation | Assignment of Assignor's Interest |
| Jun 5, 2019 Reel 49372, frame 972 | Nexolve Corporation | Nexolve Holding Company, LLC | Assignment of Assignor's Interest |
| Apr 25, 2025 Reel 70951, frame 341 | Nexolve Holding Company, LLC | Barings Finance LLC, as Collateral Agent | 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
May 2028
Term ends May 30, 2028. No further fees fall due before then
Note
The 140 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
65
later US patents cite this one
That is top 25% of utility patents granted in 2009 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.