Term ends Feb 2, 2039 · High confidence
20-year base term ends May 31, 2038
Filed May 31, 2018 as application 15/994,501 · Granted Sep 28, 2021
Base term plus 247 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
May 31, 2018
May 31, 2018
Term ends
Feb 2, 2039
Feb 2, 2039
Granted
Sep 28, 2021
Sep 28, 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
247
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.
9
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 247 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 May 31, 2018, when this application, 15/994,501, was filed | May 31, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +247 days, USPTO patent term adjustment record | Feb 2, 2039 | 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 | Feb 2, 2039 | High confidence |
This family
| US 11,134,013 | this patent Feb 2039 | Feb 2039 |
| US 11,372,689 | In force Jun 2038 | Jun 2038 |
| US 12,436,809 | In force Aug 2038 | Aug 2038 |
| US 11,836,535 | In force May 2038 | May 2038 |
| US 12,430,185 | In force May 2038 | May 2038 |
| US 12,511,175 | In force May 2038 | May 2038 |
| US 12,327,146 | In force May 2038 | May 2038 |
| US 12,248,821 | In force May 2038 | May 2038 |
8 of 9 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 8, 2019 Reel 49109, frame 745 | Allen, Arthur L.; Serbu, Bradley T. | Nodus Software Solutions LLC | Assignment of Assignor's Interest |
| Feb 11, 2022 Reel 58988, frame 310 | Nodus Software Solutions LLC | Adaptive Computing Enterprises, Inc. | 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
Feb 2039
Term ends Feb 2, 2039. Maintenance fees still fall due before then
Note
The 247 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
44
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.