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US

Method of Controlling Semiconductor Device Fabrication

US 8,594,827 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Metryx Ltd., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Jan 7, 2029 · Medium confidence

Why Medium: A parent in the chain could not be resolved.

Filed Dec 19, 2012 as application 13/719,887 · Granted Nov 26, 2013
Base term, 20 years from filing
Today
20 years from filing
2009 2029
Clock starts
Jan 7, 2009
Term ends
Jan 7, 2029
Granted
Nov 26, 2013
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,364,302, to Jan 7, 2029. The term already ends on or before that date, so the cap shortened nothing.
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.
3
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 Jan 7, 2009, when application PCT/GB2009/000043, the earliest non-provisional in its chain, was filed (this one was filed Dec 19, 2012); a parent in its chain could not be resolved (the next row)Jan 7, 2029High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,364,302)resolves to Jan 7, 2029, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJan 7, 2029Medium confidence

This family

US 8,364,302In force
Jan 2030
Jan 2030
US 8,594,827this patent
Jan 2029
Jan 2029
2 of 3 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
Mar 11, 2026
Reel 74040, frame 493
Metryx LimitedLam Research CorporationAssignment 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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