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US 7,508,924 Lapsed on the fee record

Lapsed Mar 24, 2017 on the fee record · Medium confidence

Computed 20-year base term

Why Medium: A parent in the chain could not be resolved.

Second maintenance fee unpaid; grace period ended.

Filed Sep 28, 2006 as application 11/536,147 · Granted Mar 24, 2009

Base term, 20 years from filing, plus 210 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer

Today

Lapsed Mar 24, 2017

1997 2026

Clock starts
Jun 17, 1997

No longer in force
Mar 24, 2017

Granted
Mar 24, 2009

Term would have run to
Jul 5, 2017

base term after the term ends fee events 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

210

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 7,116,766.

1 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 Jun 17, 1997, when the earliest non-provisional application in its chain was filed (this one was filed Sep 28, 2006); a parent in its chain could not be resolved (the next row)	Jun 17, 2017	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium confidence
Patent term adjustment	+210 days, USPTO patent term adjustment record	Jan 13, 2018	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 7,116,766)	capped to Jul 5, 2017	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	1 of 2 maintenance fees paid	lapsed Mar 24, 2017	High confidence
Computed term end	The steps above, in order	Mar 24, 2017	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.

Electronic Mail Distribution System for Integrated Electronic Communications

Lapsed Mar 24, 2017 on the fee record · Medium confidence

20-year base term ended Jun 17, 2017

How we calculated this date

Sources