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Method and System for Detecting Malicious Domain Names at an Upper DNS Hierarchy

US 8,631,489 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Damballa, Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Collateral for a security interest recorded Aug 14, 2025 (Acquiom Agency Services LLC (as Successor Collateral Agent)).

Term ends Jan 25, 2032 · High confidence

Held by Fortra, LLC
Filed Jan 25, 2012 as application 13/358,303 · Granted Jan 14, 2014
Base term, 20 years from filing
Today
20 years from filing
2012 2032
Clock starts
Jan 25, 2012
Term ends
Jan 25, 2032
Granted
Jan 14, 2014
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.
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.
2
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. 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 Jan 25, 2012, when this application, 13/358,303, was filedJan 25, 2032High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh 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 orderJan 25, 2032High confidence

This family

US 8,631,489this patent
Jan 2032
Jan 2032
US 9,686,291In force
Jan 2032
Jan 2032
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
Apr 4, 2012
Reel 27990, frame 95
Antonakakis, Manos; Perdisci, Roberto; Lee, Wenke; Vasiloglou, Nikolaos, IIDamballa, Inc.Assignment of Assignor's Interest
May 14, 2015
Reel 35639, frame 136
Damballa, Inc.Silicon Valley BankSecurity Interest
Sep 8, 2016
Reel 39678, frame 960
Silicon Valley BankDamballa, Inc.Release of Security Interest
Oct 10, 2016
Reel 40297, frame 988
Damballa, Inc.Saratoga Investment Corp. SBIC LP, as Administrative AgentPatent Security Agreement
Dec 27, 2017
Reel 44492, frame 654
Damballa, Inc.Pnc Bank, National AssociationSecurity Interest
Jan 4, 2018
Reel 44535, frame 907
Saratoga Investment Corp. SBIC LPDamballa, Inc.Release of Security Interest
Feb 20, 2019
Reel 48386, frame 329
Damballa, Inc.Help/Systems, LLCAssignment of Assignor's Interest
Nov 13, 2019
Reel 50993, frame 35
Pnc Bank, National AssociationDamballa, Inc.Release of Security Interest
Nov 19, 2019
Reel 51059, frame 861
Help/Systems, LLCJefferies Finance LLC, as Collateral AgentFirst Lien Intellectual Property Security Agreement
Nov 19, 2019
Reel 51059, frame 911
Help/Systems, LLCJefferies Finance LLC, as Collateral AgentSecond Lien Intellectual Property Security Agreement
May 20, 2021
Reel 56322, frame 628
Jefferies Finance LLC, as Existing AgentGolub Capital Markets LLC, as Successor AgentAssignment of Intellectual Property Security Agreement
Dec 15, 2022
Reel 62136, frame 777
Help/Systems, LLCFortra, LLCChange of Name
Feb 3, 2025
Reel 70086, frame 189
Pnc Bank, National AssociationDamballa, Inc.Release of Security Interest
Aug 14, 2025
Reel 72471, frame 665
Golub Capital Markets LLC (as Existing Agent)Acquiom Agency Services LLC (as Successor Collateral Agent)Assignment of Intellectual Property Security Agreement
Nov 21, 2025
Reel 73663, frame 327
Fortra, LLCJefferies Finance LLC, as Collateral AgentExtended RCF First Lien Intellectual Property Security Agreement
Nov 21, 2025
Reel 73663, frame 914
Fortra, LLCJefferies Finance LLC, as Collateral AgentExtended First Lien Intellectual Property Security Agreement
Nov 21, 2025
Reel 73683, frame 534
Alert Logic, Inc.; Digital Guardian LLC; Ecrime Management Strategies, Inc.; Fortra, LLC; Globalscape, Inc.; Tripwire, Inc.; Vera Security, Inc.Ares Capital Corporation, As Collateral AgentNew Money First Lien Intellectual Property Security Agreement
Nov 21, 2025
Reel 73662, frame 442
Acquiom Agency Serv Ices LLCFortra, LLC (F/K/A Help/Systems, LLC)Termination and Release of Second Lien Intellectual Property Security Interest Recorded at Reel/Frame 51059/0911
Nov 24, 2025
Reel 73783, frame 406
Jefferies Finance LLCFortra, LLC (Formerly Known as Help/Systems, LLC)Termination and Release of First Lien Intellectual Property Security Interest Recorded at Reel/Frame 51059/0861
Jan 6, 2026
Reel 74233, frame 632
Alert Logic, Inc.; Digital Guardian LLC; Ecrime Management Strategies, Inc.; Fortra, LLC; Globalscape, Inc.; Tripwire, Inc.Acquiom Agency Services LLC, 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.

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