Methods, Apparatus and Products for Filtering

US 10,279,295 Lapsed on the fee record

Overview Sources & methods

Lapsed May 7, 2023 on the fee record · Medium confidence

Computed 20-year base term

Why Medium: A terminal disclaimer is on file (filed) with no resolved reference, so the term may end earlier.

First maintenance fee unpaid; grace period ended.

Named at grant Filtration Group Corporation · find this owner

Filed Mar 3, 2009 as application 12/396,570 · Granted May 7, 2019

Base term, 20 years from filing

Today

Lapsed May 7, 2023

2009 2029

Clock starts
Mar 3, 2009

No longer in force
May 7, 2023

Granted
May 7, 2019

Term would have run to
Mar 3, 2029

base term after the term ends 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

None

Term adjustment

No prosecution delay on this record.

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

0 of 2

Maintenance fees paid

Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 3, 2009, when this application, 12/396,570, was filed	Mar 3, 2029	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	High confidence
Terminal disclaimer cap	Disclaimer on file (filed), reference document not resolved	no cap applied, and none guessed	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	0 of 2 maintenance fees paid	lapsed May 7, 2023	High confidence
Computed term end	The steps above, in order	May 7, 2023	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.

Methods, Apparatus and Products for Filtering

Lapsed May 7, 2023 on the fee record · Medium confidence

20-year base term ends Mar 3, 2029

How we calculated this date

Sources