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Energy-Free Refrigeration Door and Method for Making the Same

US 7,891,153 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Feb 22, 2019 on the fee record · Medium confidence

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

Second maintenance fee unpaid; grace period ended.

Filed Feb 13, 2004 as application 10/777,210 · Granted Feb 22, 2011
Base term, 20 years from filing, plus 1591 days of patent term adjustment (USPTO delay)
Today
Lapsed Feb 22, 2019
2001 2026
Clock starts
Jul 19, 2001
No longer in force
Feb 22, 2019
Granted
Feb 22, 2011
Term would have run to
Nov 26, 2025
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
1,591
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
44
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Nov 26, 2025: its 20-year base term plus 1591 days of term adjustment for prosecution delay. Confidence: Medium. from the record

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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Jul 19, 2001, when application 09/909,262, the earliest non-provisional in its chain, was filed (this one was filed Feb 13, 2004); a parent in its chain could not be resolved (the next row)Jul 19, 2021High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+1591 days, USPTO patent term adjustment recordNov 26, 2025High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidlapsed Feb 22, 2019High confidence
Computed term endThe steps above, in orderFeb 22, 2019Medium confidence

This family

US 7,107,729Term ended
Nov 2021
Nov 2021
US 6,761,201Term ended
Oct 2022
Oct 2022
US 7,891,153this patent
Feb 2019
Feb 2019
US 7,316,759Term ended
Nov 2023
Nov 2023
Application 11/013,700Abandoned
not computed
not computed
US 8,281,527Term ended
no later than Nov 2022
no later than Nov 2022
Application 11/303,992Abandoned
not computed
not computed
US 7,891,154Lapsed on the fee record
Feb 2019
Feb 2019
8 of 44 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Dec 14, 2007
Reel 20261, frame 577
Afg Industries, Inc.AGC Flat Glass North America, Inc.Change of Name

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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited