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Magnetoresistive Stack and Method of Fabricating Same

US 10,622,554 Surrendered on reissue
OverviewFamilyAssignmentsSources & methods

Surrendered on reissue Mar 4, 2025 · High confidence

Surrendered on reissue Mar 4, 2025 · its term and maintenance fees continue in US RE50,331.

Filed May 22, 2019 as application 16/419,165 · Granted Apr 14, 2020
Base term, 20 years from filing
Today
Surrendered Mar 4, 2025
2011 2031
Clock starts
Jun 10, 2011
No longer in force
Mar 4, 2025
Granted
Apr 14, 2020
Term would have run to
Jun 10, 2031
base term 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 of 3
Maintenance fees paid
Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.
9
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. 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 10, 2011, when application 13/158,171, the earliest non-provisional in its chain, was filed (this one was filed May 22, 2019)Jun 10, 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 events1 of 2 maintenance fees paidno changeHigh confidence
ReissueUS RE50,331 issued Mar 4, 2025, and this patent's term continues in it (35 U.S.C. 251, 252)surrendered Mar 4, 2025High confidence
Surrendered on reissueThe steps above, in orderMar 4, 2025High confidence

This family

US 8,686,484In force
Dec 2031
Dec 2031
US 9,159,906In force
Jun 2031
Jun 2031
US 9,553,258In force
no later than Jun 2031
no later than Jun 2031
US 9,947,865In force
Jun 2031
Jun 2031
US 10,199,574In force
Jun 2031
Jun 2031
US 10,347,828In force
Jun 2031
Jun 2031
US 10,622,554this patent
Mar 2025
Mar 2025
US RE50,331In force
Jun 2031
Jun 2031
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
May 23, 2019
Reel 49283, frame 976
Whig, Renu; Slaughter, Jon; Rizzo, Nicholas; Sun, Jijun; Mancoff, Frederick; Houssameddine, DimitriEverspin Technologies, 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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