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US 8,804,945 Term ended

Overview Sources & methods

Term ended Apr 27, 2026 · High confidence

Computed 20-year base term

USPTO later recorded it as expired for non-payment on Sep 14, 2026.

Held by Securus Technologies, LLC

Filed Feb 1, 2012 as application 13/364,212 · Granted Aug 12, 2014

Base term plus 161 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ended Apr 27, 2026

2005 2026

Clock starts
Nov 17, 2005

Term ended
Apr 27, 2026

Granted
Aug 12, 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

161

Days of term adjustment

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

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 8,135,127, to Apr 27, 2026. The term already ends on or before that date, so the cap shortened nothing.

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 Nov 17, 2005, when the earliest non-provisional application in its chain was filed (this one was filed Feb 1, 2012)	Nov 17, 2025	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+161 days, USPTO patent term adjustment record	Apr 27, 2026	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 8,135,127)	resolves to Apr 27, 2026, no earlier than this term, so no change	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	term ended	High confidence
USPTO status record	Recorded as expired for non-payment on Sep 14, 2026, after the term ended	no change	High confidence
Computed term end	The steps above, in order	Apr 27, 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.

Detecting Events Occurring on Remote Telephone

Term ended Apr 27, 2026 · High confidence

20-year base term ended Nov 17, 2025

How we calculated this date

Sources