Collateral for a security interest recorded Nov 4, 2022 (Second Avenue Capital Partners LLC).
Term ends Dec 24, 2035 · High confidence
20-year base term ends Apr 17, 2035
Held by Casper Sleep Inc.
Filed Apr 17, 2015 as application 14/689,945 · Granted Feb 13, 2018
Base term plus 251 days of patent term adjustment (USPTO delay)
Today
2015
2035
Clock starts
Apr 17, 2015
Apr 17, 2015
Term ends
Dec 24, 2035
Dec 24, 2035
Granted
Feb 13, 2018
Feb 13, 2018
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
251
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.
7
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 251 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 Apr 17, 2015, when this application, 14/689,945, was filed | Apr 17, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +251 days, USPTO patent term adjustment record | Dec 24, 2035 | 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 | Dec 24, 2035 | High confidence |
This family
| US 9,888,785 | this patent Dec 2035 | Dec 2035 |
| Application PCT/US2015/026564 | PCT application no patent term | no patent term |
| US 9,661,934 | Lapsed on the fee record May 2025 | May 2025 |
| US 9,962,009 | Lapsed on the fee record May 2026 | May 2026 |
| Application 15/482,777 | Abandoned not computed | not computed |
| US 11,202,517 | Lapsed on the fee record Dec 2025 | Dec 2025 |
| US 11,622,636 | In force Apr 2035 | Apr 2035 |
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 20, 2015 Reel 35448, frame 737 | Krim, Philip; Parikh, Neil; Chapin, Jeff | Casper Sleep Inc. | Assignment of Assignor's Interest |
| Nov 17, 2021 Reel 58176, frame 712 | Casper Sleep Inc. | Triplepoint Venture Growth BDC Corp. | Security Interest |
| Jan 21, 2022 Reel 58807, frame 227 | Casper Sleep Inc. | Triplepoint Venture Growth BDC Corp. | Corrective Assignment to Correct the the Patent Application Number 29756442 Previously Recorded at Reel: 058176 Frame: 0712. Assignor(S) Hereby Confirms the Assignment. |
| Jan 25, 2022 Reel 58766, frame 483 | Casper Sleep Inc. | KKR Loan Administration Services LLC | Security Interest |
| Jan 28, 2022 Reel 58891, frame 668 | Triplepoint Venture Growth BDC Corp. | Casper Sleep Inc. | Release of Security Interest |
| Nov 4, 2022 Reel 61658, frame 685 | Casper Sleep Inc. | Second Avenue Capital Partners LLC | Security Interest |
| Nov 7, 2022 Reel 61674, frame 785 | KKR Loan Administration Services LLC | Casper Sleep Inc. | Release of Security Interest |
| Oct 31, 2023 Reel 65399, frame 633 | Casper Sleep Inc. | Acquiom Agency Services LLC, as Agent | Security Interest |
| Dec 15, 2023 Reel 65885, frame 438 | Casper Sleep Inc. | Cumulus Capital LLC | Security Interest |
| Dec 15, 2023 Reel 66029, frame 913 | Casper Sleep Inc.; Second Avenue Capital Partners LLC | Tiger Finance, LLC | Assignment of Intellectual Property Security Agreement |
| Dec 15, 2023 Reel 66034, frame 963 | Acquiom Agency Services LLC, as the Agent | Casper Sleep Inc. | Release of Security Interest |
| Mar 27, 2024 Reel 66913, frame 371 | Cumulus Capital LLC | Acquiom Agency Services LLC | Assignment of Intellectual Property Security Agreement |
| Nov 7, 2024 Reel 69177, frame 174 | Acquiom Agency Services LLC | Casper Sleep Inc. | Release of Security Interest |
| Nov 7, 2024 Reel 69177, frame 210 | Tiger Finance, LLC | Casper Sleep 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
Dec 2035
Term ends Dec 24, 2035. Maintenance fees still fall due before then
Note
The 251 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
35
later US patents cite this one
That is top 10% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.