Method and System for the Remediation of Aquatic Facilities

US 12,286,370 In force

Term ends Mar 18, 2041 · Medium confidence

Computed 20-year base term

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 11,999,633), so the cap could be lower.

Held by Truox, Inc.

Filed Jul 18, 2022 as application 17/866,823 · Granted Apr 29, 2025

Base term plus 511 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer

Today

20 years from filing

Term ends Mar 18, 2041

2021 2041

Clock starts
Mar 18, 2021

Term ends
Mar 18, 2041

Granted
Apr 29, 2025

base term Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

511

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

Capped

Terminal disclaimer

Resolved from the filed document, referencing US 11,999,633, US 12,037,263.

0 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Mar 18, 2021, when the earliest non-provisional application in its chain was filed (this one was filed Jul 18, 2022)	Mar 18, 2041	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+511 days, USPTO patent term adjustment record	Aug 11, 2042	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 11,999,633, US 12,037,263)	capped to Mar 18, 2041	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	0 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Mar 18, 2041	Medium confidence

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

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

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

Method and System for the Remediation of Aquatic Facilities

Term ends Mar 18, 2041 · Medium confidence

20-year base term ends Mar 18, 2041

How we calculated this date

Sources