Term ends Dec 28, 2037 · High confidence
20-year base term ends Sep 15, 2036
Held by Circlesx LLC
Filed Sep 15, 2016 as application 15/266,326 · Granted Oct 5, 2021
Base term plus 469 days of patent term adjustment (USPTO delay)
Today
2016
2037
Clock starts
Sep 15, 2016
Sep 15, 2016
Term ends
Dec 28, 2037
Dec 28, 2037
Granted
Oct 5, 2021
Oct 5, 2021
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
469
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.
116
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 469 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 Sep 15, 2016, when this application, 15/266,326, was filed | Sep 15, 2036 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +469 days, USPTO patent term adjustment record | Dec 28, 2037 | 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 | Dec 28, 2037 | High confidence |
This family
| US 11,138,827 | this patent Dec 2037 | Dec 2037 |
| US 10,460,520 | In force Nov 2037 | Nov 2037 |
| US 12,039,585 | In force Dec 2039 | Dec 2039 |
| US 12,124,976 | In force no later than Jul 2040 | no later than Jul 2040 |
| US 11,810,023 | In force May 2040 | May 2040 |
| US 11,861,527 | In force no later than Aug 2041 | no later than Aug 2041 |
| US 12,493,831 | In force no later than Sep 2038 | no later than Sep 2038 |
| Application 16/242,981 | Abandoned not computed | not computed |
8 of 116 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 |
|---|---|---|---|
| May 20, 2019 Reel 49235, frame 761 | Simpson, Erik | Simpson Holdings, Inc. | Assignment of Assignor's Interest |
| May 28, 2019 Reel 49296, frame 704 | Simpson Holdings, Inc. | Simpsx Technologies LLC | Assignment of Assignor's Interest |
| Nov 25, 2021 Reel 58251, frame 180 | Simpsx Technologies LLC | Circlesx LLC | Assignment of Assignor's 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
Dec 2037
Term ends Dec 28, 2037. Maintenance fees still fall due before then
Note
The 469 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 5% of utility patents granted in 2021 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.