Collateral for a security interest recorded Jul 31, 2026 (Umb Bank, N.A.).
Term ends Feb 28, 2033 · High confidence
20-year base term ends Oct 27, 2031
Held by Hantover, Inc.
Filed Oct 27, 2011 as application 13/283,324 · Granted Nov 25, 2014
Base term plus 490 days of patent term adjustment (USPTO delay)
Today
2011
2033
Clock starts
Oct 27, 2011
Oct 27, 2011
Term ends
Feb 28, 2033
Feb 28, 2033
Granted
Nov 25, 2014
Nov 25, 2014
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
490
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 490 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 Oct 27, 2011, when this application, 13/283,324, was filed | Oct 27, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +490 days, USPTO patent term adjustment record | Feb 28, 2033 | 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 | Feb 28, 2033 | High confidence |
This family
| US 8,893,391 | this patent Feb 2033 | Feb 2033 |
| Application PCT/US2012/061494 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Nov 10, 2011 Reel 27207, frame 741 | 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
Feb 2033
Term ends Feb 28, 2033. No further fees fall due before then
Note
The 490 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
32
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.