Collateral for a security interest recorded Oct 24, 2024 (Fifth Third Bank, National Association).
Term ends Sep 18, 2036 · High confidence
20-year base term ends Apr 30, 2035
Held by K&N Engineering, Inc.
Filed Apr 30, 2015 as application 14/701,163 · Granted May 21, 2019
Base term plus 507 days of patent term adjustment (USPTO delay)
Today
2015
2036
Clock starts
Apr 30, 2015
Apr 30, 2015
Term ends
Sep 18, 2036
Sep 18, 2036
Granted
May 21, 2019
May 21, 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
507
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 507 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 30, 2015, when this application, 14/701,163, was filed | Apr 30, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +507 days, USPTO patent term adjustment record | Sep 18, 2036 | 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 | Sep 18, 2036 | High confidence |
This family
| Application PCT/US2015/028627 | PCT application no patent term | no patent term |
| US 10,294,897 | this patent Sep 2036 | Sep 2036 |
| US 11,401,895 | In force Jan 2036 | Jan 2036 |
| Application 17/878,679 | Abandoned not computed | not computed |
| US 12,503,991 | In force Feb 2036 | Feb 2036 |
| Application 18/424,611 | Pending not computed | not computed |
| Application 19/397,913 | 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 |
|---|---|---|---|
| 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 |
| Nov 7, 2016 Reel 40242, frame 457 | Williams, Steve; Wall, Jere James; Daniels, Rick | 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
Sep 2036
Term ends Sep 18, 2036. Maintenance fees still fall due before then
Note
The 507 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is top 25% 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
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.