The Patent Finder
US

System and Method for Reliably Communicating Information Without Explicit Acknowledgements Including Retransmission of Older, Missed Commands

US 8,112,694 In force
OverviewAssignmentsSources & methods

Also listed on Arch Rock LLC, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Jun 16, 2030 · High confidence

Filed Oct 3, 2007 as application 11/906,965 · Granted Feb 7, 2012
Base term plus 987 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2007 2030
Clock starts
Oct 3, 2007
Term ends
Jun 16, 2030
Granted
Feb 7, 2012
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
987
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.

This patent's term runs 987 days past its 20-year base term on 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 Oct 3, 2007, when this application, 11/906,965, was filedOct 3, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+987 days, USPTO patent term adjustment recordJun 16, 2030High 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 orderJun 16, 2030High confidence

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
Dec 31, 2007
Reel 20331, frame 544
Woo, Alec; Culler, David E.Arch RockAssignment of Assignor's Interest
Apr 15, 2011
Reel 26138, frame 950
Arch Rock CorporationArch Rock LLCChange of Name
Apr 15, 2011
Reel 26137, frame 114
Arch Rock LLCCisco Technology, 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.

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