The Patent Finder
US

Device and Method for Repairing Pipe

US 7,975,726 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Apr 23, 2026 (JPMorgan Chase Bank, N.A.).

Term ends Nov 6, 2029 · High confidence

Filed Aug 27, 2007 as application 11/845,134 · Granted Jul 12, 2011
Base term plus 802 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2007 2029
Clock starts
Aug 27, 2007
Term ends
Nov 6, 2029
Granted
Jul 12, 2011
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
802
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.

This patent's term runs 802 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Aug 27, 2007, when this application, 11/845,134, was filedAug 27, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+802 days, USPTO patent term adjustment recordNov 6, 2029High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 6, 2029High confidence

This family

US 7,975,726this patent
Nov 2029
Nov 2029
Application PCT/US2008/074001PCT application
no patent term
no patent term
US 8,667,991In force
Jan 2028
Jan 2028
US 8,678,037In force
Oct 2027
Oct 2027
US 8,667,992Lapsed on the fee record
Mar 2018
Mar 2018
US 9,366,375In force
Aug 2027
Aug 2027
US 8,689,835In force
Aug 2027
Aug 2027
US 10,458,591In force
Aug 2027
Aug 2027
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
Oct 31, 2007
Reel 20043, frame 838
Kiest, Larry W., JR.LMK Enterprises, Inc.Assignment of Assignor's Interest
Jul 17, 2012
Reel 28571, frame 118
LMK Enterprises, Inc.LMK Technologies, LLCAssignment of Assignor's Interest
Apr 24, 2019
Reel 48991, frame 468
Perma-Liner Industries, LLC; Action Products Marketing Corp.; LMK Technologies, LLCAres Capital Corporation., As Collateral AgentGrant of Security Interest in Patent Rights
Nov 1, 2021
Reel 58598, frame 447
Action Products Marketing, LLC; LMK Technologies LLC; Moray Group, LLC; Perma-Liner Industries, LLC; Pipe Lining Supply CorporationAdams Street Credit Advisors LPSecurity Interest
Nov 2, 2021
Reel 58001, frame 984
Ares Capital Corporation, As Collateral AgentPerma-Liner Industries, LLC; Action Products Marketing Corp.; LMK Technologies, LLCRelease of Security Interest
Nov 2, 2021
reel/frame not recorded
Ares Capital Corporation, As Collateral AgentPerma-Liner Industries, LLCRelease of Security Interest
Nov 2, 2021
reel/frame not recorded
Ares Capital Corporation, As Collateral AgentAction Products Marketing Corp.Release of Security Interest
Nov 2, 2021
reel/frame not recorded
Ares Capital Corporation, As Collateral AgentLMK Technologies, LLCRelease of Security Interest
Feb 20, 2026
Reel 74946, frame 416
Adams Street Credit Advisors LPAction Products Marketing, LLC; LMK Technologies, LLC; Moray Group, LLC; Perma-Liner Industries, LLC; Pipe Lining Supply CorporationRelease of Security Interest
Feb 20, 2026
reel/frame not recorded
Adams Street Credit Advisors LPAction Products Marketing, LLCRelease of Security Interest
Feb 20, 2026
reel/frame not recorded
Adams Street Credit Advisors LPLMK Technologies, LLCRelease of Security Interest
Feb 20, 2026
reel/frame not recorded
Adams Street Credit Advisors LPMoray Group, LLCRelease of Security Interest
Feb 20, 2026
reel/frame not recorded
Adams Street Credit Advisors LPPerma-Liner Industries, LLCRelease of Security Interest
Feb 20, 2026
reel/frame not recorded
Adams Street Credit Advisors LPPipe Lining Supply CorporationRelease of Security Interest
Apr 23, 2026
Reel 75463, frame 713
Inframark, LLC; Ina Acquisition Corp.; Underground Solutions, Inc.; LMK Technologies, LLC; BLD Services, LLC; Perma-Liner Industries, LLCJPMorgan Chase Bank, N.A., as Administrative 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