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US 11,061,555 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Jul 13, 2025 on the fee record · High confidence

First maintenance fee unpaid; grace period ended.

Filed Jan 31, 2019 as application 16/263,447 · Granted Jul 13, 2021
Base term, 20 years from filing
Today
Lapsed Jul 13, 2025
2019 2039
Clock starts
Jan 31, 2019
No longer in force
Jul 13, 2025
Granted
Jul 13, 2021
Term would have run to
Jan 31, 2039
base term after the term ends 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.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
9
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 Jan 31, 2039: its 20-year base term, with no 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 Jan 31, 2019, when this application, 16/263,447, was filedJan 31, 2039High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidlapsed Jul 13, 2025High confidence
Computed term endThe steps above, in orderJul 13, 2025High confidence

This family

US 11,009,776In force
Jun 2039
Jun 2039
Application 16/263,348Abandoned
not computed
not computed
US 11,142,135In force
May 2039
May 2039
US 11,061,555this patent
Jul 2025
Jul 2025
US 10,703,302In force
Jan 2039
Jan 2039
US 11,852,956In force
no later than Jan 2040
no later than Jan 2040
US 11,414,027In force
Jan 2039
Jan 2039
Application 18/150,536Abandoned
not computed
not computed
8 of 9 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
May 29, 2019
Reel 49306, frame 670
Grant, Robert George; Lambert, Graham Keith; Hill, CeriPortable Multimedia Ltd.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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