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US

Dual Film Light Guide for Illuminating Displays

US 7,733,439 In force
OverviewFamilyAssignmentsSources & methods

Term ends Apr 30, 2027 · High confidence

Filed Apr 30, 2007 as application 11/742,299 · Granted Jun 8, 2010
Base term, 20 years from filing
Today
20 years from filing
2007 2027
Clock starts
Apr 30, 2007
Term ends
Apr 30, 2027
Granted
Jun 8, 2010
base term 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 30, 2007, when this application, 11/742,299, was filedApr 30, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderApr 30, 2027High confidence

This family

US 7,733,439this patent
Apr 2027
Apr 2027
Application PCT/US2008/061046PCT application
no patent term
no patent term
Application 12/725,407Abandoned
not computed
not computed
US 8,373,821In force
Oct 2027
Oct 2027
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
Aug 10, 2007
Reel 19684, frame 907
Sampsell, Jeffrey B.; Gruhlke, Russell W.; Mienko, Mark; Xu, Gang; Bita, IonQualcomm, IncorporatedAssignment of Assignor's Interest
Feb 27, 2008
Reel 20571, frame 253
Qualcomm IncorporatedQualcomm Mems Technologies, Inc.Assignment of Assignor's Interest
Aug 31, 2016
Reel 39891, frame 1
Qualcomm Mems Technologies, Inc.Snaptrack, Inc.Assignment 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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