Communications trailer

US 7,852,274 Lapsed on the fee record

Overview Sources & methods

Lapsed Dec 14, 2022 on the fee record · From the USPTO record

Computed 20-year base term

Third maintenance fee unpaid; grace period ended.

Named at grant Rockwell Collins Satellite Communications Systems, Inc. · find this owner

Filed Dec 12, 2006 as application 11/609,574 · Granted Dec 14, 2010

Base term, 20 years from filing, plus 946 days of patent term adjustment (USPTO delay)

Today

Lapsed Dec 14, 2022

2006 2029

Clock starts
Dec 12, 2006

No longer in force
Dec 14, 2022

Granted
Dec 14, 2010

Term would have run to
Jul 15, 2029

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

946

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

2 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. 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 Dec 12, 2006, when this application, 11/609,574, was filed	Dec 12, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+946 days, USPTO patent term adjustment record	Jul 15, 2029	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 3 maintenance fees paid	lapsed Dec 14, 2022	High confidence
Computed term end	The steps above, in order	Dec 14, 2022	From the USPTO record

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.

Communications trailer

Lapsed Dec 14, 2022 on the fee record · From the USPTO record

20-year base term ends Dec 12, 2026

How we calculated this date

Sources