Collateral for a security interest recorded Dec 2, 2024 (Twin Brook Capital Partners, LLC).
Term ends Jun 17, 2035 · High confidence
20-year base term ends Oct 4, 2033
Held by Zonar Systems, Inc.
Filed Oct 4, 2013 as application 14/046,900 · Granted Jan 22, 2019
Base term plus 621 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Oct 4, 2013
Oct 4, 2013
Term ends
Jun 17, 2035
Jun 17, 2035
Granted
Jan 22, 2019
Jan 22, 2019
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
621
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
71
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 621 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. 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 4, 2013, when this application, 14/046,900, was filed | Oct 4, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +621 days, USPTO patent term adjustment record | Jun 17, 2035 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 17, 2035 | High confidence |
This family
| US 6,671,646 | Term ended Feb 2022 | Feb 2022 |
| US 6,804,626 | Term ended Feb 2022 | Feb 2022 |
| US 7,117,121 | Term ended Nov 2021 | Nov 2021 |
| US 7,557,696 | Term ended Feb 2022 | Feb 2022 |
| Application 11/133,139 | Abandoned not computed | not computed |
| US 7,362,229 | Term ended Jul 2022 | Jul 2022 |
| US 7,564,375 | Term ended Nov 2022 | Nov 2022 |
| US 7,680,595 | Term ended Aug 2022 | Aug 2022 |
8 of 71 applications in this family shown, earliest filings first. 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 17, 2014 Reel 34274, frame 129 | Zonar Systems, Inc. | Bank Of America, N.a. | Patent Security Agreement |
| Oct 28, 2016 Reel 40512, frame 99 | Bank Of America, N.a. | Zonar Systems, Inc. | Release of Security Interest |
| Nov 14, 2016 Reel 40309, frame 661 | McQuade, Charles Michael; Stieger, Ron | Zonar Systems, Inc. | Assignment of Assignor's Interest |
| Dec 2, 2024 Reel 69466, frame 630 | Zonar Systems, Inc. | Twin Brook Capital Partners, LLC, as 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
Jun 2035
Term ends Jun 17, 2035.
Note
The 621 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
82
later US patents cite this one
That is top 5% of utility patents granted in 2019 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.