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US

Linearly Expanding Spine Cage for Enhanced Spinal Fusion

US 7,819,921 In force
OverviewFamilyAssignmentsSources & methods

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

Term ends Jan 8, 2027 · Medium confidence

Why Medium: A parent in the chain could not be resolved.

Held by VB Spine LLC
Filed Oct 31, 2007 as application 11/980,977 · Granted Oct 26, 2010
Base term plus 514 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2005 2027
Clock starts
Aug 12, 2005
Term ends
Jan 8, 2027
Granted
Oct 26, 2010
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
514
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.
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 runs 514 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Aug 12, 2005, when application 11/202,725, the earliest non-provisional in its chain, was filed (this one was filed Oct 31, 2007); a parent in its chain could not be resolved (the next row)Aug 12, 2025High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+514 days, USPTO patent term adjustment recordJan 8, 2027High 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 8, 2027Medium confidence

This family

US 7,722,674Lapsed on the fee record
May 2022
May 2022
US 7,819,921this patent
Jan 2027
Jan 2027
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 14, 2010
Reel 24686, frame 21
Innvotec Surgical, Inc.Coalign Innovations, Inc.Change of Name
Jul 27, 2010
Reel 24745, frame 875
Grotz, Thomas R.Innvotec Surgical, Inc.Assignment of Assignor's Interest
May 19, 2015
Reel 35667, frame 165
Coalign Innovations, Inc.Howmedica Osteonics Corp.Merger
May 8, 2025
Reel 71224, frame 768
Howmedica Osteonics Corp.VB Spine US Opco LLCAssignment of Assignor's Interest
Jun 16, 2025
Reel 71682, frame 116
K2M, Inc.; VB Spine US Opco LLC; VB Spine LLCAnkura Trust Company, LLC, as Collateral AgentPatent Security Agreement
Aug 8, 2025
Reel 72340, frame 397
K2M, Inc.; VB Spine US Opco LLCTexas Capital Bank, As Collateral AgentSecurity Interest
Jun 23, 2026
Reel 75812, frame 865
VB Spine US Opco LLCVB Spine LLCAssignment of Assignor's 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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