Collateral for a security interest recorded Jun 2, 2021 (Prospect Capital Corporation).
Lapsed Nov 28, 2025 on the fee record · High confidence
20-year base term ends Aug 18, 2034
Second maintenance fee unpaid; grace period ended.
Held by Enseo, LLC
Filed May 16, 2017 as application 15/596,181 · Granted Nov 28, 2017
Base term, 20 years from filing
Today
Lapsed Nov 28, 2025
2014
2034
Clock starts
Aug 18, 2014
Aug 18, 2014
No longer in force
Nov 28, 2025
Nov 28, 2025
Granted
Nov 28, 2017
Nov 28, 2017
Term would have run to
Aug 18, 2034
Aug 18, 2034
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,332,304, US 9,344,757, US 9,357,254, US 9,654,826, US 9,654,827, US 9,712,872, US 9,800,932, to Aug 18, 2034. The term already ends on or before that date, so the cap shortened nothing.
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.
15
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Aug 18, 2034: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 18, 2014, when application 14/461,484, the earliest non-provisional in its chain, was filed (this one was filed May 16, 2017) | Aug 18, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,332,304, US 9,344,757, US 9,357,254, US 9,654,826, US 9,654,827, US 9,712,872, US 9,800,932) | resolves to Aug 18, 2034, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Nov 28, 2025 | High confidence |
| Computed term end | The steps above, in order | Nov 28, 2025 | High confidence |
This family
| US 9,332,304 | In force Aug 2034 | Aug 2034 |
| US 9,654,826 | In force Aug 2034 | Aug 2034 |
| US 9,832,490 | this patent Nov 2025 | Nov 2025 |
| US 10,856,047 | In force Aug 2034 | Aug 2034 |
| US 10,091,534 | In force Aug 2034 | Aug 2034 |
| US 10,602,195 | In force Aug 2034 | Aug 2034 |
| Application 16/826,532 | Abandoned not computed | not computed |
| Application 17/104,580 | Abandoned not computed | not computed |
8 of 15 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 18, 2017 Reel 42421, frame 160 | Ogle, Vanessa; Miller, Thomas R.; Fang, William C. | Enseo, Inc. | Assignment of Assignor's Interest |
| Jan 27, 2021 Reel 55139, frame 530 | Enseo, Inc. | Enseo, LLC | Change of Name |
| Jun 2, 2021 Reel 56462, frame 174 | Enseo, LLC; Catapult Technologies, LLC | Prospect Capital Corporation | 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,332,304, US 9,344,757, US 9,357,254, US 9,654,826, US 9,654,827, US 9,712,872, US 9,800,932, ends no earlier than this term, so it caps nothing.
Citations
65
later US patents cite this one
That is top 5% of utility patents granted in 2017 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.