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System and Method for Low Power Radio Operation in a Wireless Packet Network

US 7,515,556 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Apr 7, 2021 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Apr 25, 2006 as application 11/411,404 · Granted Apr 7, 2009
Base term, 20 years from filing, plus 413 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 7, 2021
2006 2027
Clock starts
Apr 25, 2006
No longer in force
Apr 7, 2021
Granted
Apr 7, 2009
Term would have run to
Jun 12, 2027
base term patent term adjustment 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
413
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.
8
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Jun 12, 2027: its 20-year base term plus 413 days of term 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 Apr 25, 2006, when this application, 11/411,404, was filedApr 25, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+413 days, USPTO patent term adjustment recordJun 12, 2027High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Apr 7, 2021High confidence
Computed term endThe steps above, in orderApr 7, 2021High confidence

This family

US 7,515,556this patent
Apr 2021
Apr 2021
Application 11/516,841Abandoned
not computed
not computed
Application PCT/US2007/010005PCT application
no patent term
no patent term
US 8,681,671Lapsed on the fee record
Mar 2022
Mar 2022
US 7,986,652Lapsed on the fee record
Jul 2023
Jul 2023
US 8,175,073In force
Jun 2027
Jun 2027
US 8,009,602Lapsed on the fee record
Aug 2023
Aug 2023
US 9,078,212Term ended
Apr 2026
Apr 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
Jul 24, 2006
Reel 18127, frame 519
Hui, Jonathan W.; 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.

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