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US

Modular Powered Air Purifying Respirator System

US 11,291,869 In force
OverviewFamilyAssignmentsSources & methods

Term ends Apr 29, 2040 · High confidence

Filed Nov 14, 2018 as application 16/190,415 · Granted Apr 5, 2022
Base term plus 532 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2018 2040
Clock starts
Nov 14, 2018
Term ends
Apr 29, 2040
Granted
Apr 5, 2022
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
532
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.

This patent's term runs 532 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. 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 Nov 14, 2018, when this application, 16/190,415, was filedNov 14, 2038High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+532 days, USPTO patent term adjustment recordApr 29, 2040High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderApr 29, 2040High confidence

This family

Application PCT/US2018/061027PCT application
no patent term
no patent term
US 11,291,869this patent
Apr 2040
Apr 2040
US 12,311,205In force
Nov 2039
Nov 2039
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
Dec 2, 2024
Reel 69456, frame 785
Airboss Defense Group, LLCGreat Rock Capital Partners, LLCSecurity Interest
Dec 4, 2024
Reel 69484, frame 759
Airboss Defense Group, LLCThe Toronto-dominion Bank, As AgentSecurity 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