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Pipe Tradesman's Ladder Top and Method

US 8,210,313 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Jul 3, 2024 on the fee record · Medium confidence

Why Medium: A terminal disclaimer is on file (filed) with no resolved reference, so the term may end earlier.

Third maintenance fee unpaid; grace period ended.

Held by Werner Co.
Filed May 3, 2006 as application 11/416,961 · Granted Jul 3, 2012
Base term, 20 years from filing, plus 166 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 3, 2024
2006 2026
Clock starts
Feb 3, 2006
No longer in force
Jul 3, 2024
Granted
Jul 3, 2012
Term would have run to
Jul 19, 2026
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
166
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
11
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 Jul 19, 2026: its 20-year base term plus 166 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Feb 3, 2006, when application 11/347,613, the earliest non-provisional in its chain, was filed (this one was filed May 3, 2006)Feb 3, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+166 days, USPTO patent term adjustment recordJul 19, 2026High confidence
Terminal disclaimer capDisclaimer on file (filed), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Jul 3, 2024High confidence
Computed term endThe steps above, in orderJul 3, 2024Medium confidence

This family

US 8,376,085In force
Apr 2027
Apr 2027
US 8,210,313this patent
Jul 2024
Jul 2024
US 8,365,863Lapsed on the fee record
Feb 2017
Feb 2017
US 8,272,478Term ended
no later than Feb 2026
no later than Feb 2026
US 8,528,696Lapsed on the fee record
Sep 2025
Sep 2025
US 10,781,636Term ended
no later than Feb 2026
no later than Feb 2026
Application 13/764,388Abandoned
not computed
not computed
US 9,714,541Term ended
Feb 2026
Feb 2026
8 of 11 applications in this family shown, earliest filings first. 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
Jul 17, 2006
Reel 17950, frame 221
Astor, Kyle G.Werner Co.Assignment of Assignor's Interest
Apr 29, 2011
Reel 26200, frame 981
Werner Co.Bank of America, N.A., as Administrative AgentSecurity Agreement
Jul 24, 2017
Reel 43318, frame 824
Bank of America, N.A., as Administrative AgentWerner Co.Release of Security Interest in Intellectual Property Collateral
Jul 24, 2017
Reel 43318, frame 877
Werner Co.Bank of America, N.A., as Administrative AgentRelease of Security Interest in Intellectual Property Collateral
Jul 25, 2017
Reel 43327, frame 956
Knaack LLC; Werner Co.; Werner Technologies, Inc.JPMorgan Chase Bank, N.A., as Collateral Agent in Respect of the ABL Credit AgreementPatent Security Agreement (ABL)
Jul 25, 2017
Reel 43328, frame 1
Knaack LLC; Werner Co.; Werner Technologies, Inc.JPMorgan Chase Bank, N.A., as Collateral Agent in Respect of the Term Loan Credit AgreementPatent Security Agreement (TERM Loan)
Jun 12, 2023
Reel 63958, frame 740
Werner Co.Wilmington Trust, National Association, as Notes Collateral AgentSecurity Interest
Jun 12, 2023
Reel 63957, frame 231
JPMorgan Chase Bank, N.A., as Collateral AgentKnaack LLC; Werner Co.; Werner Technologies, Inc.Release of Security Interest in Patents at R/F 043328/0001
Jun 12, 2023
reel/frame not recorded
JPMorgan Chase Bank, N.A., as Collateral AgentKnaack LLCRelease of Security Interest in Patents at R/F 043328/0001
Jun 12, 2023
reel/frame not recorded
JPMorgan Chase Bank, N.A., as Collateral AgentWerner Co.Release of Security Interest in Patents at R/F 043328/0001
Jun 12, 2023
reel/frame not recorded
JPMorgan Chase Bank, N.A., as Collateral AgentWerner Technologies, Inc.Release of Security Interest in Patents at R/F 043328/0001
Jun 27, 2023
Reel 64126, frame 396
Werner Co.Wilmington Trust, National Association, as Notes Collateral AgentSecurity Interest
Jun 27, 2023
Reel 64205, frame 636
Werner Co.Willa Finco II SARL (Formerly Triton V Luxco 95 SARL)Security Interest
Jun 16, 2025
Reel 71649, frame 699
Wilmington Trust, National Association, as Notes Collateral AgentWerner Co.Termination and Release of Security Interest in Patents Recorded at Reel 063958, Frame 0740
Jun 16, 2025
Reel 71649, frame 774
Wilmington Trust, National Association, as Notes Collateral AgentWerner Co.Termination and Release of Security Interest in Patents Recorded at Reel 064126, Frame 0396
Jun 16, 2025
Reel 71649, frame 887
Willa Finco II SARLWerner Co.Termination and Release of Security Interest in Patents Recorded at Reel 064205, Frame 0636

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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