Collateral for a security interest recorded Feb 23, 2024 (The Stephen Wall 2011 Trust).
Term ends Sep 13, 2029 · High confidence
20-year base term ends Mar 18, 2029
Held by Circa Scientific, Inc.
Filed Mar 18, 2009 as application 12/406,771 · Granted Oct 13, 2015
Base term plus 179 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
Mar 18, 2009
Mar 18, 2009
Term ends
Sep 13, 2029
Sep 13, 2029
Granted
Oct 13, 2015
Oct 13, 2015
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
179
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
8
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 179 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 Mar 18, 2009, when this application, 12/406,771, was filed | Mar 18, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +179 days, USPTO patent term adjustment record | Sep 13, 2029 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 13, 2029 | High confidence |
This family
| US 9,155,476 | this patent Sep 2029 | Sep 2029 |
| US 9,833,149 | In force May 2030 | May 2030 |
| US 9,668,655 | In force Mar 2029 | Mar 2029 |
| US 11,357,408 | In force Mar 2029 | Mar 2029 |
| US 10,806,348 | In force Feb 2030 | Feb 2030 |
| Application 17/075,597 | Abandoned not computed | not computed |
| US 11,896,348 | In force Mar 2029 | Mar 2029 |
| Application 18/440,953 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Apr 27, 2015 Reel 35501, frame 54 | Fojtik, Shawn P. | Circa Scientific, LLC | Assignment of Assignor's Interest |
| Nov 27, 2018 Reel 47650, frame 524 | Circa Scientific, LLC | Circa Scientific, Inc. | Change of Name |
| Feb 23, 2024 Reel 66547, frame 64 | Circa Scientific, Inc. | The Stephen Wall 2011 Trust | Security Interest |
| Mar 29, 2024 Reel 66945, frame 263 | Circa Scientific, Inc. | Jpmorgan Chase Bank, N.a. | Security Interest |
| Jul 11, 2024 Reel 67959, frame 857 | Jpmorgan Chase Bank, N.a. | Circa Scientific, 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
Sep 2029
Term ends Sep 13, 2029. Maintenance fees still fall due before then
Note
The 179 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
69
later US patents cite this one
That is top 10% of utility patents granted in 2015 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.