Clevum Oü

13 patents currently held · Updated Nov 14, 2026

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

Ending by 2030

Sep 2029

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

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.

1 fee due Dec 30, 2026
The maintenance fee for High performance ventilatory training mask incorporating multiple and adjustable air admittance valves for replicating various encountered altitude resistances (US 9,067,086) comes due Dec 30, 2026. Unpaid by Jun 30, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Patent	Title	Status	Expires	Confidence
US D738,145	Guitar stand In force Term ends Sep 8, 2029 · From the USPTO record	In force	Term ends Sep 8, 2029	From the USPTO record
US D765,237	Resistance breathing device In force Term ends Aug 30, 2031 · From the USPTO record	In force	Term ends Aug 30, 2031	From the USPTO record
US D767,754	Resistance and filtration breathing device In force Term ends Sep 27, 2031 · From the USPTO record	In force	Term ends Sep 27, 2031	From the USPTO record
US 9,067,086	High performance ventilatory training mask incorporating multiple and adjustable air admittance valves for replicating various encountered altitude resistances In force Term ends Feb 11, 2032 · From the USPTO record	In force	Term ends Feb 11, 2032	From the USPTO record
US D811,581	Resistance breathing device In force Term ends Feb 27, 2033 · From the USPTO record	In force	Term ends Feb 27, 2033	From the USPTO record
US D820,974	Resistance breathing device In force Term ends Jun 19, 2033 · From the USPTO record	In force	Term ends Jun 19, 2033	From the USPTO record
US 9,579,540	Resistance breathing device In force Term ends Jan 6, 2036 · From the USPTO record	In force	Term ends Jan 6, 2036	From the USPTO record
US 9,707,444	Resistance breathing device In force Ends no later than Mar 22, 2036 · From the USPTO record	In force	Ends no later than Mar 22, 2036	From the USPTO record
US 9,878,204	Resistance breathing device In force Ends no later than Mar 22, 2036 · From the USPTO record	In force	Ends no later than Mar 22, 2036	From the USPTO record
US 9,643,048	Resistance breathing device In force Term ends Oct 19, 2036 · From the USPTO record	In force	Term ends Oct 19, 2036	From the USPTO record

10 of 13 patents shown.

Pro members see all 13.

Pro members: see all 13 patents

Also on record, not counted in the 13: 2 lapsed for an unpaid fee. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

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

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