160 patents currently held

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

4 more records may belong here and await a decision; they are not counted.

The next term ends in May 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

May 2027

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 20412042204320442045

notable patents all others 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

Notable: the highest-ranked patents in this portfolio by citations and family size.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

HVAC Home Air Filter US 10,512,872

Cited by 20 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2035.

Ends Jun 2035 · High confidence Also notable

Filter Oil Formulation US 10,294,897

Cited by 16 later US patents, top 25% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2036.

Ends Sep 2036 · High confidence Also notable

Curved Base Air Cleaner US 10,883,455

Cited by 11 later US patents, top 25% of utility patents granted in 2021 in our data. Protection runs to 2037.

Ends Apr 2037 · High confidence

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

3 fees due Feb 13 to 28, 2027 · next Feb 13
1 fee due Mar 10, 2027
The maintenance fee for Sprayer Nozzle Support (US 10,406,547) comes due Mar 10, 2027. Unpaid by Sep 10, 2027, it lapses early.
3 fees due Apr 3 to 29, 2027 · next Apr 3
3 fees due May 7 to 28, 2027 · next May 7
3 fees due Jun 3 to 30, 2027 · next Jun 3
3 fees due Jul 9 to 21, 2027 · next Jul 9
1 fee due Aug 18, 2027
The maintenance fee for Super-Pleated Vehicle Air Filter (US 10,563,628) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.
3 fees due Sep 12 to 24, 2027 · next Sep 12
5 fees due Oct 2 to 28, 2027 · next Oct 2

Which patents, and when each one lapses · Pro

Recent changes

2 of the patents on this record were granted since Aug 16, 2026
1 term has ended since Aug 16, 2026

What they patent

The 5 largest of its 81 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Cabin Air Filter	10 in force	to Jan 2037
Aircharger Air Intake System and Method	6 in force	to Apr 2037
Bottom Feed Fuel Bowl	6 in force	to Mar 2035
Hood Air Scoop	5 in force	to Jul 2029
Air Velocity Apparatus and System	5 in force	to Apr 2029

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,770,011	Air Velocity Apparatus and System In force Ends no later than May 23, 2027 · Medium confidence	In force	Ends no later than May 23, 2027	Medium confidence
US D685,890	Exhaust Gasket In force Term ends Jul 9, 2027 · High confidence	In force	Term ends Jul 9, 2027	High confidence
US D685,891	Exhaust Gasket In force Term ends Jul 9, 2027 · High confidence	In force	Term ends Jul 9, 2027	High confidence
US 8,028,564	Oil Migration System In force Term ends Aug 10, 2027 · High confidence	In force	Term ends Aug 10, 2027	High confidence
US 8,418,528	Oil Migration System In force Term ends Aug 10, 2027 · High confidence	In force	Term ends Aug 10, 2027	High confidence
US 8,783,092	Oil Migration System In force Ends no later than Aug 10, 2027 · Medium confidence	In force	Ends no later than Aug 10, 2027	Medium confidence
US 8,029,606	Hood Air Scoop In force Term ends Aug 20, 2027 · High confidence	In force	Term ends Aug 20, 2027	High confidence
US 8,268,054	Hood Air Scoop In force Ends no later than Aug 20, 2027 · Medium confidence	In force	Ends no later than Aug 20, 2027	Medium confidence
US 8,518,161	Hood Air Scoop In force Ends no later than Aug 20, 2027 · Medium confidence	In force	Ends no later than Aug 20, 2027	Medium confidence
US 7,581,430	Air Velocity Apparatus and System In force Term ends Aug 25, 2027 · High confidence	In force	Term ends Aug 25, 2027	High confidence

10 of 160 patents shown.

Pro members see all 160.

Pro members: see all 160 patents

Also on record, not counted in the 160: 11 patents ended · 49 applications pending · 41 applications abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Export every term end as CSV · Pro

K&N Engineering, Inc.