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Isolating data within a computer system using private shadow mappings

US 9,274,974 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jul 27, 2030 · High confidence

Held by Vmware LLC
Filed Oct 20, 2006 as application 11/584,178 · Granted Mar 1, 2016
Base term plus 1376 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2006 2030
Clock starts
Oct 20, 2006
Term ends
Jul 27, 2030
Granted
Mar 1, 2016
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
1,376
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.
2
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 1376 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 Oct 20, 2006, when this application, 11/584,178, was filedOct 20, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1376 days, USPTO patent term adjustment recordJul 27, 2030High 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 orderJul 27, 2030High confidence

This family

US 9,274,974this patent
Jul 2030
Jul 2030
US 10,241,819In force
Nov 2026
Nov 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
Oct 20, 2006
Reel 18452, frame 140
Chen, Xiaoxin; Walspurger, Carl A.; Subrahmanyam, PratapVmware, Inc.Assignment of Assignor's Interest
Apr 15, 2024
Reel 67102, frame 395
Vmware, Inc.Vmware LLCChange 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