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US 8,076,591 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Dec 13, 2015 on the fee record · High confidence

First maintenance fee unpaid; grace period ended.

Filed Jul 2, 2007 as application 11/794,652 · Granted Dec 13, 2011
Base term, 20 years from filing, plus 1197 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 13, 2015
2005 2029
Clock starts
Dec 22, 2005
No longer in force
Dec 13, 2015
Granted
Dec 13, 2011
Term would have run to
Apr 2, 2029
base term patent term adjustment after the term ends 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
1,197
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
52
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 Apr 2, 2029: its 20-year base term plus 1197 days of term adjustment for prosecution delay. Confidence: High. 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 Dec 22, 2005, when application PCT/GB2005/050260, the earliest non-provisional in its chain, was filed (this one was filed Jul 2, 2007)Dec 22, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1197 days, USPTO patent term adjustment recordApr 2, 2029High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidlapsed Dec 13, 2015High confidence
Computed term endThe steps above, in orderDec 13, 2015High confidence

This family

Application 12/374,470Abandoned
not computed
not computed
Application 11/547,773Abandoned
not computed
not computed
Application 11/547,794Abandoned
not computed
not computed
US 8,466,848Lapsed on the fee record
Jun 2021
Jun 2021
US 8,076,591this patent
Dec 2015
Dec 2015
US 7,894,306In force
Oct 2028
Oct 2028
US 8,177,348Lapsed on the fee record
May 2024
May 2024
US 7,986,398In force
Feb 2029
Feb 2029
8 of 52 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
Jul 2, 2007
Reel 19589, frame 976
Agnew, Martin Joseph; Panaghiston, Gary David; Niman, Murray Jerel; Chandler, NicholasBAE Systems PLCAssignment of Assignor's Interest

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.

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