Multi-Level Multiplexor System for Networked Browser

US 8,635,234 Lapsed on the fee record

Overview Sources & methods

Lapsed Jan 21, 2026 on the fee record · High confidence

Computed 20-year base term

Third maintenance fee unpaid; grace period ended.

Held by Fintegraph, LLC

Filed May 31, 2005 as application 11/141,269 · Granted Jan 21, 2014

Base term plus 3036 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer

Today

20 years from filing

Lapsed Jan 21, 2026

2001 2026

Clock starts
May 22, 2001

Term ended
Jan 21, 2026

Granted
Jan 21, 2014

base term patent term adjustment after the term ends fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

3,036

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 6,912,532.

2 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 May 22, 2001, when the earliest non-provisional application in its chain was filed (this one was filed May 31, 2005)	May 22, 2021	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+3036 days, USPTO patent term adjustment record	Sep 13, 2029	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 6,912,532)	capped to May 19, 2022	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	lapsed Jan 21, 2026	High confidence
Computed term end	The steps above, in order	Jan 21, 2026	High 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.

Multi-Level Multiplexor System for Networked Browser

Lapsed Jan 21, 2026 on the fee record · High confidence

20-year base term ended May 22, 2021

How we calculated this date

Sources