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Crutch

US 10,898,405 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Nov 3, 2025 (Fortress Credit Corp.).

Term ends Apr 1, 2036 · High confidence

Filed Jan 13, 2020 as application 16/741,134 · Granted Jan 26, 2021
Base term, 20 years from filing
Today
20 years from filing
2016 2036
Clock starts
Apr 1, 2016
Term ends
Apr 1, 2036
Granted
Jan 26, 2021
base term 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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,532,001, to Apr 1, 2036. The term already ends on or before that date, so the cap shortened nothing.
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.
5
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Apr 1, 2016, when application 15/089,048, the earliest non-provisional in its chain, was filed (this one was filed Jan 13, 2020)Apr 1, 2036High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 10,532,001)resolves to Apr 1, 2036, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderApr 1, 2036High confidence

This family

US 10,231,896In force
Apr 2036
Apr 2036
US 10,532,001In force
Apr 2036
Apr 2036
US 10,898,405this patent
Apr 2036
Apr 2036
US 11,872,182In force
Apr 2036
Apr 2036
US 12,138,216In force
Apr 2036
Apr 2036
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
Jan 15, 2020
Reel 51521, frame 265
Younger, Max JefferiesMobility Designed, Inc.Assignment of Assignor's Interest
Jun 24, 2024
Reel 67811, frame 685
Mobility Designed, Inc.Medical Depot, Inc.Assignment of Assignor's Interest
Nov 3, 2025
Reel 73529, frame 50
Devilbiss Healthcare LLC; Hurryworks LLC; Inovo, Inc.; Medical Depot, Inc.; Drive Medical Canada Inc.Fortress Credit Corp., as Collateral 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