The Patent Finder
US

Cable Duct Assembly

US 11,862,950 In force
OverviewSources & methods

Term ends Mar 24, 2040 · High confidence

Held by Hellermanntyton Corporation
Filed Dec 23, 2022 as application 18/146,000 · Granted Jan 2, 2024
Base term plus 1 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2020 2040
Clock starts
Mar 23, 2020
Term ends
Mar 24, 2040
Granted
Jan 2, 2024
base term Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,539,194, to Mar 24, 2040. The term already ends on or before that date, so the cap shortened nothing.
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.

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.
Step Input Date after this step Confidence
Base term, 20 years from filingClock starts Mar 23, 2020, when the earliest non-provisional application in its chain was filed (this one was filed Dec 23, 2022)Mar 23, 2040High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1 days, USPTO patent term adjustment recordMar 24, 2040High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 11,539,194)resolves to Mar 24, 2040, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderMar 24, 2040High confidence

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.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited