Term ends Oct 6, 2031 · High confidence
20-year base term ends Aug 2, 2031
Held by Hypres, Inc.
Filed Aug 2, 2011 as application 13/196,494 · Granted Mar 19, 2013
Base term plus 65 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Aug 2, 2011
Aug 2, 2011
Term ends
Oct 6, 2031
Oct 6, 2031
Granted
Mar 19, 2013
Mar 19, 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
65
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.
4
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 65 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 Aug 2, 2011, when this application, 13/196,494, was filed | Aug 2, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +65 days, USPTO patent term adjustment record | Oct 6, 2031 | 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 (reinstated) | High confidence |
| Computed term end | The steps above, in order | Oct 6, 2031 | High confidence |
This family
| US 8,401,600 | this patent Oct 2031 | Oct 2031 |
| US 8,744,541 | In force Aug 2031 | Aug 2031 |
| US 9,276,615 | In force Aug 2031 | Aug 2031 |
| US 9,906,191 | In force Jan 2032 | Jan 2032 |
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 2, 2011 Reel 26688, frame 901 | Filippov, Timur V.; Kirichenko, Alexander F.; Gupta, Deepnarayan | Hypres, Inc. | Assignment of Assignor's Interest |
| Dec 8, 2011 Reel 27348, frame 921 | Hypres, Inc. | The Government of the United States of America, as Represented by the Secretary of the Navy | Confirmatory License |
| Jun 17, 2021 Reel 56617, frame 116 | Hypres, Inc. | Avidbank | Security Interest |
| Aug 6, 2024 Reel 68348, frame 909 | Avidbank | Hypres, 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
Oct 2031
Term ends Oct 6, 2031. No further fees fall due before then
Note
The 65 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
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.