Collateral for a security interest recorded Oct 24, 2024 (Fifth Third Bank, National Association).
Term ends Dec 5, 2037 · High confidence
20-year base term ends Aug 1, 2037
Held by K&N Engineering, Inc.
Filed Aug 1, 2017 as application 15/666,353 · Granted May 26, 2020
Base term plus 126 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
Aug 1, 2017
Aug 1, 2017
Term ends
Dec 5, 2037
Dec 5, 2037
Granted
May 26, 2020
May 26, 2020
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
126
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.
4
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 126 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 Aug 1, 2017, when this application, 15/666,353, was filed | Aug 1, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +126 days, USPTO patent term adjustment record | Dec 5, 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 5, 2037 | High confidence |
This family
| US 10,661,215 | this patent Dec 2037 | Dec 2037 |
| US 11,179,664 | In force no later than Aug 2037 | no later than Aug 2037 |
| US 11,826,687 | In force no later than Aug 2037 | no later than Aug 2037 |
| Application 18/514,315 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Mar 8, 2018 Reel 45149, frame 172 | Williams, Steve; Wall, Jere James | K&N Engineering, Inc. | Assignment of Assignor's Interest |
| Sep 19, 2019 Reel 50436, frame 813 | Williams, Steve | K&N Engineering, Inc. | Assignment of Assignor's Interest |
| Sep 19, 2019 Reel 50438, frame 532 | Wall, Jere James | K&N Engineering, Inc. | Assignment of Assignor's Interest |
| Oct 17, 2022 Reel 61689, frame 682 | K & N Engineering, Inc. | Ankura Trust Company, LLC | Superpriority Patent Security Agreement |
| Feb 15, 2023 Reel 62760, frame 937 | Ankura Trust Company, LLC | K & N Engineering, Inc. | Release of Security Interest |
| Oct 24, 2024 Reel 71008, frame 165 | K & N Engineering, Inc. | Fifth Third Bank, National Association, as Agent | Security Interest |
| Oct 25, 2024 Reel 69268, frame 13 | K & N Engineering, Inc. | Ankura Trust Company, LLC | Patent Security Agreement – Supplement No. 1 |
| May 8, 2026 Reel 75785, frame 57 | Ankura Trust Company, LLC | K & N Engineering, 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 2037
Term ends Dec 5, 2037. Maintenance fees still fall due before then
Note
The 126 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
9
later US patents cite this one
That is top 25% of utility patents granted in 2020 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.