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Measurement-Diverse Imaging and Wavefront Sensing with Amplitude and Phase Estimation

US 7,531,774 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed May 12, 2021 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Jun 5, 2006 as application 11/446,109 · Granted May 12, 2009
Base term, 20 years from filing, plus 64 days of patent term adjustment (USPTO delay)
Today
Lapsed May 12, 2021
2006 2026
Clock starts
Jun 5, 2006
No longer in force
May 12, 2021
Granted
May 12, 2009
Term would have run to
Aug 8, 2026
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
64
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.
9
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 Aug 8, 2026: its 20-year base term plus 64 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 Jun 5, 2006, when this application, 11/446,109, was filedJun 5, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+64 days, USPTO patent term adjustment recordAug 8, 2026High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed May 12, 2021High confidence
Computed term endThe steps above, in orderMay 12, 2021High confidence

This family

US 7,346,597Term ended
Jul 2026
Jul 2026
US 7,531,774this patent
May 2021
May 2021
US 7,663,529In force
Jan 2028
Jan 2028
US 7,571,146Term ended
Jul 2025
Jul 2025
US 7,917,458In force
no later than Mar 2027
no later than Mar 2027
US 7,801,842In force
Nov 2027
Nov 2027
US 7,843,377In force
Aug 2027
Aug 2027
US 8,009,079In force
Aug 2027
Aug 2027
8 of 9 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
Jun 5, 2006
Reel 17955, frame 271
Paxman, Richard G.; Seldin, John H.General Dynamics Advanced Information Systems, Inc.Assignment of Assignor's Interest
Aug 26, 2015
Reel 36423, frame 830
General Dynamics Advanced Information Systems, Inc.Mda Information Systems LLCAssignment of Assignor's Interest
Aug 8, 2019
Reel 50006, frame 451
Mda Information Systems, LLCRadiant Geospatial Solutions LLCChange of Name
Dec 11, 2019
Reel 51258, frame 517
Radiant Geospatial Solutions LLCRoyal Bank of Canada, as Collateral AgentAmended and Restated U.S. Patent and Trademark Security Agreement
Dec 12, 2019
Reel 51262, frame 824
Digitalglobe, Inc.; Radiant Geospatial Solutions LLC; Space Systems/Loral, LLC (F/K/A Space Systems/Loral Inc.)Wilmington Trust, National Association, - as Notes Collateral AgentSecurity Agreement (NOTES)
Sep 23, 2020
Reel 53866, frame 384
Radiant Geospatial Solutions LLCWilmington Trust, National Association, as Notes Collateral AgentPatent Security Agreement
Dec 31, 2020
Reel 54885, frame 909
Royal Bank of Canada, as Collateral AgentRadiant Geospatial Solutions LLCRelease of Security Interest in Patent and Trademark Collateral at Reel/Frame No. 51258/0517
Dec 31, 2020
Reel 54885, frame 917
Wilmington Trust, National Association, as Notes Collateral AgentRadiant Geospatial Solutions LLCRelease of Security Interest in Patent Collateral at Reel/Frame No. 53866/0384
Dec 31, 2020
Reel 54885, frame 939
Wilmington Trust, National Association, as Notes Collateral AgentRadiant Geospatial Solutions LLCRelease of Security Interest in Patent Collateral at Reel/Frame No. 51262/0824
Jun 21, 2022
Reel 60390, frame 282
Wilmington Trust, National AssociationDigitalglobe, Inc.; Space Systems/Loral, LLC; Radiant Geospatial Solutions LLCRelease of Security Interest
Jun 21, 2022
reel/frame not recorded
Wilmington Trust, National AssociationDigitalglobe, Inc.Release of Security Interest
Jun 21, 2022
reel/frame not recorded
Wilmington Trust, National AssociationSpace Systems/Loral, LLCRelease of Security Interest
Jun 21, 2022
reel/frame not recorded
Wilmington Trust, National AssociationRadiant Geospatial Solutions LLCRelease of Security 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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