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Display Illumination Device with a Film-Based Lightguide Having Stacked Incident Surfaces

US 9,028,123 In force
OverviewFamilyAssignmentsSources & methods

Term ends Feb 14, 2032 · High confidence

Held by Azumo, Inc.
Filed Apr 15, 2011 as application 13/088,167 · Granted May 12, 2015
Base term plus 305 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2011 2032
Clock starts
Apr 15, 2011
Term ends
Feb 14, 2032
Granted
May 12, 2015
base term patent term adjustment 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
305
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.
8
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 runs 305 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 15, 2011, when this application, 13/088,167, was filedApr 15, 2031High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+305 days, USPTO patent term adjustment recordFeb 14, 2032High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderFeb 14, 2032High confidence

This family

US 9,028,123this patent
Feb 2032
Feb 2032
US 9,557,473In force (reinstated)
Jul 2031
Jul 2031
US 9,651,729In force (reinstated)
Jun 2031
Jun 2031
US 10,215,905In force
Jun 2031
Jun 2031
US 10,802,196In force (reinstated)
Apr 2031
Apr 2031
US 11,275,204In force
Apr 2031
Apr 2031
US 11,828,966In force
no later than Apr 2031
no later than Apr 2031
US 12,366,698In force
Apr 2031
Apr 2031
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
Nov 20, 2012
Reel 29330, frame 468
Nichol, Anthony John; Coleman, Zane ArthurFlex Lighting II, LLCAssignment of Assignor's Interest
Sep 12, 2022
Reel 61065, frame 860
Azumo, Inc.Venture Lending & Leasing IX, Inc.; Wti Fund X, Inc.Security Interest
Sep 12, 2022
reel/frame not recorded
Azumo, Inc.Venture Lending & Leasing IX, Inc.Security Interest
Sep 12, 2022
reel/frame not recorded
Azumo, Inc.Wti Fund X, Inc.Security Interest
Dec 17, 2025
Reel 74291, frame 241
Flex Lighting II, LLCAzumo, 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.

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