Collateral for a security interest recorded Jul 31, 2026 (Umb Bank, N.A.).
Term ends Aug 23, 2028 · Medium confidence
20-year base term ended Jun 9, 2026
Why Medium: A parent in the chain could not be resolved.
Held by Hantover, Inc.
Filed Aug 15, 2007 as application 11/839,382 · Granted Oct 18, 2011
Base term plus 806 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Jun 9, 2006
Jun 9, 2006
Term ends
Aug 23, 2028
Aug 23, 2028
Granted
Oct 18, 2011
Oct 18, 2011
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
806
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.
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 806 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 Jun 9, 2006, when application 11/423,266, the earliest non-provisional in its chain, was filed (this one was filed Aug 15, 2007); a parent in its chain could not be resolved (the next row) | Jun 9, 2026 | 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 | +806 days, USPTO patent term adjustment record | Aug 23, 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 | Aug 23, 2028 | Medium confidence |
This family
| Application 11/423,266 | Abandoned not computed | not computed |
| US 8,037,611 | this patent Aug 2028 | Aug 2028 |
| Application PCT/US2008/072367 | PCT application no patent term | no patent term |
| US 8,281,493 | Term ended Jun 2026 | Jun 2026 |
| US 9,168,663 | Term ended Jun 2026 | Jun 2026 |
| US 9,943,973 | Term ended Jun 2026 | Jun 2026 |
| US 10,486,323 | Term ended Jul 2026 | Jul 2026 |
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 16, 2007 Reel 19706, frame 377 | Levsen, Clark A. | Hantover, Inc. | Assignment of Assignor's Interest |
| Jun 18, 2019 Reel 49508, frame 725 | Hantover, Inc. | U.S. Bank National Association | Security Interest |
| Sep 20, 2019 Reel 50441, frame 355 | Hantover, Inc. | Cit Northbridge Credit LLC, as Agent | Security Interest |
| Sep 20, 2019 Reel 50445, frame 122 | U.S. Bank National Association | Hantover, Inc. | Release of Security Interest |
| Feb 3, 2025 Reel 70090, frame 95 | Cit Northbridge Credit LLC | Hantover, Inc. | Release of Security Interest |
| Jul 31, 2026 Reel 75490, frame 856 | Hantover, Inc.; Ary, Inc. | Umb Bank, N.a. | 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
Aug 2028
Term ends Aug 23, 2028. No further fees fall due before then
Note
The 806 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
72
later US patents cite this one
That is top 10% of utility patents granted in 2011 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.