Collateral for a security interest recorded Oct 24, 2024 (Fifth Third Bank, National Association).
Term ends no later than Jan 3, 2037 · Medium confidence
20-year base term ends Mar 25, 2035
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by K&N Engineering, Inc.
Filed Dec 18, 2015 as application 14/974,092 · Granted Oct 8, 2019
Base term plus 650 days of patent term adjustment (USPTO delay)
Today
2015
2037
Clock starts
Mar 25, 2015
Mar 25, 2015
Ends no later than
Jan 3, 2037
Jan 3, 2037
Granted
Oct 8, 2019
Oct 8, 2019
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
650
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
22
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 650 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 1 of 3 maintenance fees is paid so far. Confidence: Medium. 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 Mar 25, 2015, when application 14/668,772, the earliest non-provisional in its chain, was filed (this one was filed Dec 18, 2015) | Mar 25, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +650 days, USPTO patent term adjustment record | Jan 3, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Jan 3, 2037 | Medium confidence |
This family
| US 9,701,178 | In force Jun 2035 | Jun 2035 |
| US 10,434,466 | this patent no later than Jan 2037 | no later than Jan 2037 |
| Application PCT/US2016/024097 | PCT application no patent term | no patent term |
| US 10,632,411 | In force no later than Mar 2035 | no later than Mar 2035 |
| US 10,512,872 | In force Jun 2035 | Jun 2035 |
| Application PCT/US2017/041389 | PCT application no patent term | no patent term |
| US 11,161,074 | In force Jun 2035 | Jun 2035 |
| US 11,241,647 | In force no later than Mar 2035 | no later than Mar 2035 |
8 of 22 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 |
|---|---|---|---|
| Oct 20, 2016 Reel 40436, frame 520 | K&N Engineering, Inc. | Keybank National Association | Security Interest |
| Oct 20, 2016 Reel 40436, frame 534 | K & N Engineering, Inc. | Keybank National Association | Security 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 |
| Feb 15, 2023 Reel 62819, frame 480 | Keybank National Association | 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
Jan 2037
Term ends no later than Jan 3, 2037. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 650 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jan 3, 2037. We will not guess the cap.
Citations
9
later US patents cite this one
That is above the median of utility patents granted in 2019 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.