Remotely Configurable Wireless Intercom System for an Establishment

US 9,020,553 Term ended

Overview Sources & methods

Term ended Feb 10, 2026 · Medium confidence

Computed 20-year base term

Held by Partech, Inc.

Filed Feb 21, 2014 as application 14/186,986 · Granted Apr 28, 2015

Base term, 20 years from filing

Today

20 years from filing

Term ended Feb 10, 2026

2006 2026

Clock starts
Feb 10, 2006

Term ended
Feb 10, 2026

Granted
Apr 28, 2015

base term 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

None

Term adjustment

No prosecution delay on this record.

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 8,694,040, to Feb 10, 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 Feb 10, 2006, when the earliest non-provisional application in its chain was filed (this one was filed Feb 21, 2014); a parent in its chain could not be resolved (the next row)	Feb 10, 2026	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	None on file	no change	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 8,694,040)	resolves to Feb 10, 2026, no earlier than this term, so no change	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	term ended	High confidence
Computed term end	The steps above, in order	Feb 10, 2026	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.

Remotely Configurable Wireless Intercom System for an Establishment

Term ended Feb 10, 2026 · Medium confidence

20-year base term ended Feb 10, 2026

How we calculated this date

Sources