The Patent Finder
US

Write Circuit of Memory Device

US 7,813,197 In force
OverviewFamilyAssignmentsSources & methods

Also listed on SK hynix Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Dec 7, 2026 · Medium confidence

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

Held by Mimirip LLC
Filed Feb 6, 2008 as application 12/027,068 · Granted Oct 12, 2010
Base term plus 161 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2006 2026
Clock starts
Jun 29, 2006
Term ends
Dec 7, 2026
Granted
Oct 12, 2010
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
161
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
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 runs 161 days past its 20-year base term on prosecution delay. 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 Jun 29, 2006, when application 11/476,562, the earliest non-provisional in its chain, was filed (this one was filed Feb 6, 2008); a parent in its chain could not be resolved (the next row)Jun 29, 2026High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+161 days, USPTO patent term adjustment recordDec 7, 2026High 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 orderDec 7, 2026Medium confidence

This family

US 7,345,930Lapsed on the fee record
Mar 2020
Mar 2020
US 7,586,798Term ended
Jul 2026
Jul 2026
US 7,813,197this patent
Dec 2026
Dec 2026
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 6, 2024
Reel 67328, frame 814
Hynix-Semiconductor Inc.SK Hynix Inc.Change of Name
May 9, 2024
Reel 67369, frame 832
SK Hynix Inc.Mimirip LLCAssignment of Assignor's Interest
May 14, 2024
Reel 67412, frame 482
Hynix Semiconductor Inc.SK Hynix Inc.Corrective Assignment to Correct the Assignee Is Hynix Semiconductor Inc. Not Hynix-Semiconductor Inc. There Is No Hyphen in the Name. Previously Recorded on Reel 67328 Frame 814. Assignor(S) Hereby Confirms the 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.

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