Collateral for a security interest recorded Jun 2, 2021 (Prospect Capital Corporation).
Lapsed Apr 24, 2026 on the fee record · High confidence
20-year base term ends Jun 20, 2032
Second maintenance fee unpaid; grace period ended.
Held by Enseo, LLC
Filed Apr 26, 2016 as application 15/138,532 · Granted Apr 24, 2018
Base term, 20 years from filing, plus 65 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Apr 24, 2026
2012
2032
Clock starts
Jun 20, 2012
Jun 20, 2012
No longer in force
Apr 24, 2026
Apr 24, 2026
Granted
Apr 24, 2018
Apr 24, 2018
Term would have run to
Jun 20, 2032
Jun 20, 2032
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
65
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,326,020, US 9,380,336, US 9,525,909, US 9,736,532.
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.
37
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 Jun 20, 2032: its 20-year base term plus 65 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Jun 20, 2012, when application 13/528,663, the earliest non-provisional in its chain, was filed (this one was filed Apr 26, 2016) | Jun 20, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +65 days, USPTO patent term adjustment record | Aug 24, 2032 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,326,020, US 9,380,336, US 9,525,909, US 9,736,532) | capped to Jun 20, 2032 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Apr 24, 2026 | High confidence |
| Computed term end | The steps above, in order | Apr 24, 2026 | High confidence |
This family
| US 8,650,600 | Lapsed on the fee record Feb 2026 | Feb 2026 |
| US 8,875,195 | Grace period ended Jun 2032 | Jun 2032 |
| US 9,154,825 | In force Jun 2032 | Jun 2032 |
| US 9,351,029 | In force Jun 2032 | Jun 2032 |
| US 9,326,020 | In force Jun 2032 | Jun 2032 |
| US 9,380,336 | In force Jun 2032 | Jun 2032 |
| US 9,955,211 | this patent Apr 2026 | Apr 2026 |
| Application 15/162,823 | Abandoned not computed | not computed |
8 of 37 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 |
|---|---|---|---|
| Jun 24, 2016 Reel 39002, frame 211 | Ogle, Vanessa; Fang, Bill | Enseo, Inc. | Assignment of Assignor's Interest |
| Jul 17, 2017 Reel 43210, frame 881 | Enseo, Inc. | Silicon Valley Bank | Security 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 |
| Jun 4, 2021 Reel 56445, frame 915 | Silicon Valley Bank | Enseo, LLC | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 65 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,326,020, US 9,380,336, US 9,525,909, US 9,736,532.
Citations
9
later US patents cite this one
That is above the median of utility patents granted in 2018 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.