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Portable Oxygen Delivery Device

US 9,974,920 In force
OverviewAssignmentsSources & methods

Also listed on Chart Sequal Technologies Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Feb 27, 2032 · Medium confidence

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,974,918), so the cap could be lower.

Held by Caire Inc.
Filed Apr 7, 2011 as application 13/082,351 · Granted May 22, 2018
Base term plus 422 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
20 years from filing
2011 2032
Clock starts
Apr 7, 2011
Term ends
Feb 27, 2032
Granted
May 22, 2018
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
422
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,974,918, US 9,974,919.
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.

This patent's term runs 422 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 7, 2011, when this application, 13/082,351, was filedApr 7, 2031High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+422 days, USPTO patent term adjustment recordJun 2, 2032High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 9,974,918, US 9,974,919)capped to Feb 27, 2032Medium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderFeb 27, 2032Medium 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
Jul 19, 2011
Reel 26612, frame 624
Schneider, Robert; Edwards, Paul; Hugenroth, Jason JamesChart Sequal Technologies, Inc.Assignment of Assignor's Interest
Jul 11, 2012
Reel 28546, frame 967
Chart Sequal Technologies Inc.JPMorgan Chase Bank, N.A., as Administrative AgentSecurity Agreement
Jan 30, 2014
Reel 32091, frame 330
Chart Sequal Technologies Inc.Caire Inc.Merger
Feb 10, 2014
Reel 32230, frame 550
Caire Inc.JPMorgan Chase Bank, N.A., as Administrative AgentSecurity Agreement
Dec 20, 2018
Reel 47968, frame 666
JPMorgan Chase Bank, N.A., as Administrative AgentCaire Inc.Release of Security 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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