Method to Use Acoustic Signals for Computer Communications

US 7,383,297 Term ended

Overview Sources & methods

Term ended Aug 27, 2019 · High confidence

Computed 20-year base term

USPTO later recorded it as expired for non-payment on Jul 6, 2020.

Held by Dialware Communications, LLC

Filed Oct 9, 2001 as application 09/806,618 · Granted Jun 3, 2008

Base term, 20 years from filing

Today

20 years from filing

Term ended Aug 27, 2019

1999 2026

Clock starts
Aug 27, 1999

Term ended
Aug 27, 2019

Granted
Jun 3, 2008

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

None

Term adjustment

No prosecution delay on this record.

None

Terminal disclaimer

No disclaimer on this record.

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 Aug 27, 1999, when the earliest non-provisional application in its chain was filed (this one was filed Oct 9, 2001)	Aug 27, 2019	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	None on record	no cap applied	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 Jul 6, 2020, after the term ended	no change	High confidence
Computed term end	The steps above, in order	Aug 27, 2019	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.

Method to Use Acoustic Signals for Computer Communications

Term ended Aug 27, 2019 · High confidence

20-year base term ended Aug 27, 2019

How we calculated this date

Sources