Wota Corp.

10 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

Apr 2036

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 Feb 1, 2027
The maintenance fee for Water treatment system (US 11,713,561) comes due Feb 1, 2027. Unpaid by Aug 2, 2027, it lapses early.
1 fee due May 28, 2027
The maintenance fee for Information Processing Device for Optimizing Filters That Purify Wastewater (US 11,829,113) comes due May 28, 2027. Unpaid by Nov 29, 2027, it lapses early.
1 fee due Sep 12, 2027
The maintenance fee for Water Treatment System and Water Treatment Method (US 11,926,551) comes due Sep 12, 2027. Unpaid by Mar 13, 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.

Showing 1 to 10 of 10

Patent	Title	Status	Expires	Confidence
US 10,997,673	Charging Device of Circulating Water Utilization System and Circulating-Water Utilization System In force Term ends Apr 11, 2036 · High confidence	In force	Term ends Apr 11, 2036	High confidence
US 12,077,454	Water treatment apparatus management system and household water treatment apparatus In force Term ends Mar 13, 2037 · From the USPTO record	In force	Term ends Mar 13, 2037	From the USPTO record
US 11,661,352	Water Treatment Apparatus Management System and Household Water Treatment Apparatus In force Term ends Jun 15, 2038 · High confidence	In force	Term ends Jun 15, 2038	High confidence
US 11,829,113	Information Processing Device for Optimizing Filters That Purify Wastewater In force Term ends Sep 20, 2038 · High confidence	In force	Term ends Sep 20, 2038	High confidence
US 12,468,277	Information Processing Device for Optimizing Filters That Purify Wastewater In force Term ends Sep 20, 2038 · High confidence	In force	Term ends Sep 20, 2038	High confidence
US D1,017,778	Portable hand washstand In force Term ends Mar 12, 2039 · From the USPTO record	In force	Term ends Mar 12, 2039	From the USPTO record
US 11,713,561	Water treatment system In force Term ends Oct 30, 2039 · From the USPTO record	In force	Term ends Oct 30, 2039	From the USPTO record
US 11,926,551	Water Treatment System and Water Treatment Method In force Term ends May 18, 2041 · High confidence	In force	Term ends May 18, 2041	High confidence
US 12,495,936	Membrane unit and hand washing device In force Term ends Sep 2, 2042 · From the USPTO record	In force	Term ends Sep 2, 2042	From the USPTO record
US 12,692,176	Water Treatment System and Water Treatment Method In force Term ends Sep 15, 2042 · High confidence	In force	Term ends Sep 15, 2042	High confidence

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.

9 pending

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