The Patent Finder
US

Semiconductor Device and Method of Forming Sacrificial Protective Layer to Protect Semiconductor Die Edge During Singulation

US 8,907,476 In force
OverviewFamilyAssignmentsSources & methods

Term ends Feb 17, 2031 · High confidence

Filed Apr 13, 2012 as application 13/446,664 · Granted Dec 9, 2014
Base term, 20 years from filing
Today
20 years from filing
2011 2031
Clock starts
Feb 17, 2011
Term ends
Feb 17, 2031
Granted
Dec 9, 2014
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.
19
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 Feb 17, 2011, when application 13/029,936, the earliest non-provisional in its chain, was filed (this one was filed Apr 13, 2012)Feb 17, 2031High 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 orderFeb 17, 2031High confidence

This family

US 7,767,496In force
Jan 2028
Jan 2028
US 8,343,809In force
Jan 2031
Jan 2031
US 9,318,441In force
Jan 2029
Jan 2029
US 8,004,095In force
Dec 2027
Dec 2027
US 8,183,095In force
Feb 2031
Feb 2031
US 9,252,066In force
Jun 2029
Jun 2029
US 8,456,002In force
Dec 2027
Dec 2027
US 8,907,476this patent
Feb 2031
Feb 2031
8 of 19 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
Aug 6, 2015
Reel 36288, frame 748
Stats ChipPAC, Inc.; Stats ChipPAC Ltd.Citicorp International Limited, as Common Security AgentSecurity Interest
Apr 7, 2016
Reel 38378, frame 360
Stats ChipPAC Ltd.Stats ChipPAC Pte. Lte.Change of Name
Jun 4, 2020
Reel 52844, frame 491
Citicorp International Limited, as Common Security AgentStats ChipPAC, Inc.; Stats ChipPAC Pte. Ltd. Formerly Known as Stats ChipPAC Ltd.Release of Security Interest
Jun 4, 2020
reel/frame not recorded
Citicorp International Limited, as Common Security AgentStats ChipPAC, Inc.Release of Security Interest
Jun 4, 2020
reel/frame not recorded
Citicorp International Limited, as Common Security AgentStats ChipPAC Pte. Ltd. Formerly Known as Stats ChipPAC Ltd.Release of Security Interest
Sep 5, 2023
Reel 64805, frame 735
Stats ChipPAC Ltd.Stats ChipPAC Pte. Ltd.Corrective Assignment to Correct the Spelling of the Assignee's Name on the Cover Sheet Previously Recorded at Reel: 038378 Frame: 0161. Assignor(S) Hereby Confirms the Assignment.

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