Caleffi S.P.A.

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 2027

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 Apr 1, 2027
The maintenance fee for Backflow preventer for water distribution installations (US 10,428,499) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
1 fee due Jul 2, 2027
The maintenance fee for Thermostatic mixing valve having a cold water outlet (US 11,860,647) comes due Jul 2, 2027. Unpaid by Jan 3, 2028, it lapses early.
1 fee due Sep 5, 2027
The maintenance fee for Antifreeze valve unit (US 11,920,694) comes due Sep 5, 2027. Unpaid by Mar 6, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 2026

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 7,617,989	Automatically reclosable thermostatic control device for valves In force Term ends Sep 13, 2027 · From the USPTO record	In force	Term ends Sep 13, 2027	From the USPTO record
US 8,327,867	Antifreezing valve device for hydraulic and/or water storage systems In force Term ends Apr 9, 2031 · From the USPTO record	In force	Term ends Apr 9, 2031	From the USPTO record
US D820,392	Valve In force Term ends Jun 12, 2033 · From the USPTO record	In force	Term ends Jun 12, 2033	From the USPTO record
US 9,925,543	Magnetic particle separator for thermal systems In force Term ends Jul 29, 2033 · From the USPTO record	In force	Term ends Jul 29, 2033	From the USPTO record
US D835,754	Valve In force Term ends Dec 11, 2033 · From the USPTO record	In force	Term ends Dec 11, 2033	From the USPTO record
US D888,199	Fluid distribution equipment In force Term ends Jun 23, 2035 · From the USPTO record	In force	Term ends Jun 23, 2035	From the USPTO record
US D890,883	Fluid distribution equipment In force Term ends Jul 21, 2035 · From the USPTO record	In force	Term ends Jul 21, 2035	From the USPTO record
US 10,428,499	Backflow preventer for water distribution installations In force Term ends Jun 9, 2036 · From the USPTO record	In force	Term ends Jun 9, 2036	From the USPTO record
US 11,448,328	Mixer valve device In force Term ends Jun 10, 2039 · From the USPTO record	In force	Term ends Jun 10, 2039	From the USPTO record
US 11,860,647	Thermostatic mixing valve having a cold water outlet In force Term ends Sep 11, 2039 · From the USPTO record	In force	Term ends Sep 11, 2039	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: 1 lapsed for an unpaid fee · 3 ended at full term. 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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Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

2 pending

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