Foldax, Inc.

12 patents currently held · Updated Nov 14, 2026

1 more in force is now held by another company

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

Ending by 2030

Jan 2035

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 Nov 23, 2026
The maintenance fee for Replacement Heart Valves and Their Methods of Use and Manufacture (US 11,654,019) comes due Nov 23, 2026. Unpaid by May 24, 2027, it lapses early.
1 fee due Oct 5, 2027
The maintenance fee for Replacement Heart Valves and Their Methods of Use and Manufacture (US 9,301,837) comes due Oct 5, 2027. Unpaid by Apr 5, 2028, 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 9,301,837	Replacement Heart Valves and Their Methods of Use and Manufacture In force Term ends Jan 30, 2035 · High confidence	In force	Term ends Jan 30, 2035	High confidence
US 9,539,089	Replacement Heart Valves and Their Methods of Use and Manufacture In force Term ends Jan 30, 2035 · High confidence	In force	Term ends Jan 30, 2035	High confidence
US 10,918,477	Replacement Heart Valves and Their Methods of Use and Manufacture In force Term ends Jan 30, 2035 · High confidence	In force	Term ends Jan 30, 2035	High confidence
US 11,654,019	Replacement Heart Valves and Their Methods of Use and Manufacture In force Term ends Nov 2, 2035 · High confidence	In force	Term ends Nov 2, 2035	High confidence
US 10,266,657	Polyurethane/Urea Compositions In force Term ends May 10, 2036 · High confidence	In force	Term ends May 10, 2036	High confidence
US 10,723,844	Polyurethane/Urea Compositions In force Term ends May 10, 2036 · Low confidence	In force	Term ends May 10, 2036	Low confidence
US 11,053,342	Polyurethane/Urea Materials In force Term ends May 10, 2036 · High confidence	In force	Term ends May 10, 2036	High confidence
US 12,129,331	Polyurethane/Urea Materials In force Term ends Jan 4, 2037 · High confidence	In force	Term ends Jan 4, 2037	High confidence
US 10,231,833	Prosthetic Heart Valves with Elastic Support Structures and Related Methods In force Term ends Oct 26, 2037 · High confidence	In force	Term ends Oct 26, 2037	High confidence
US 11,129,712	Prosthetic heart valves with elastic support structures and related methods In force Term ends Oct 26, 2037 · From the USPTO record	In force	Term ends Oct 26, 2037	From the USPTO record

10 of 12 patents shown.

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Pro members: see all 12 patents

Also on record, not counted in the 12: 1 patent in force now held by others. 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.

6 pending · 1 abandoned

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