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Peripheral Switching Device for Microwave Energy Platforms

US 8,920,410 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Dec 30, 2022 on the fee record · High confidence

Second maintenance fee unpaid; grace period ended.

Held by Covidien LP
Filed May 4, 2012 as application 13/464,021 · Granted Dec 30, 2014
Base term, 20 years from filing, plus 392 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 30, 2022
2012 2033
Clock starts
May 4, 2012
No longer in force
Dec 30, 2022
Granted
Dec 30, 2014
Term would have run to
May 31, 2033
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
392
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.

Its term would have run to May 31, 2033: its 20-year base term plus 392 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 May 4, 2012, when this application, 13/464,021, was filedMay 4, 2032High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+392 days, USPTO patent term adjustment recordMay 31, 2033High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidlapsed Dec 30, 2022High confidence
Computed term endThe steps above, in orderDec 30, 2022High confidence

This family

US 8,920,410this patent
Dec 2022
Dec 2022
US 9,271,792In force
May 2032
May 2032
US 9,693,824Lapsed on the fee record
Jul 2025
Jul 2025
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 4, 2012
Reel 28156, frame 677
Brannan, Joseph D.Vivant Medical, Inc.Assignment of Assignor's Interest
Apr 15, 2013
Reel 30218, frame 230
Vivant LLCCovidien LPAssignment of Assignor's Interest
Apr 15, 2013
Reel 30219, frame 781
Vivant Medical, Inc.Vivant LLCChange of Name
Mar 29, 2016
Reel 38299, frame 168
Vivant Medical, Inc.Vivant Medical LLCChange of Name
Apr 4, 2016
Reel 38343, frame 394
Vivant Medical LLCCovidien LPAssignment 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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