Cook IVC filter lawsuit MDL 2570: how the litigation actually stands with 6,569 pending cases and partial settlement framework

The Cook Medical IVC (inferior vena cava) filter litigation represents one of the more substantial active medical device mass torts that has resisted global settlement despite a decade of consolidated proceedings. MDL 2570 (In re: Cook Medical, Inc., IVC Filters Marketing, Sales Practices and Products Liability Litigation), established October 2014 in the U.S. District Court for the Southern District of Indiana before Senior Judge Richard L. Young and Magistrate Judge Tim A. Baker, has approximately 6,569 pending cases as of April 2026 with a total of 11,405+ cases filed throughout the MDL's history. The litigation has produced 1,011 case resolutions since January 2025 through individual settlements and dispositions, but Cook Medical has not agreed to a global settlement framework. The parties reached agreement on major settlement terms for a substantial subset of cases in October 2025, with negotiations continuing for remaining cases.

The substantive theory centers on alleged defective design of Cook's retrievable IVC filters — small metal devices implanted in the inferior vena cava to prevent blood clots (deep vein thrombosis) from traveling to the lungs and causing pulmonary embolism. The Cook Celect and Günther Tulip IVC filters are alleged to be susceptible to filter fracture (struts breaking off and migrating through the bloodstream), filter migration (entire filter moving from its intended position), IVC perforation (struts puncturing through the vena cava wall), and organ damage to surrounding structures including the bowel, kidneys, and major blood vessels. Plaintiffs allege Cook failed to warn physicians and patients about the substantial risks of long-term implantation and the difficulty of safe filter retrieval after extended placement periods. A 2010 Durack et al. study documented 100% perforation rate after 71 days of indwelling Cook IVC filters — substantially supporting the long-term implantation risk theory.

The procedural posture is substantially complicated by the bellwether trial results, which have produced mixed outcomes that haven't created clear pressure for global settlement. Cook Medical won the first bellwether trial in 2017 and has won several subsequent bellwether trials. But plaintiffs have also won substantial bellwether verdicts including multi-million dollar awards. The mixed results have made global settlement valuation difficult — Cook's litigation team can point to defense verdicts to argue for lower settlement values, while plaintiffs can point to substantial verdicts to argue for higher values. The October 2025 partial settlement framework addressed some categories of cases (typically those with stronger injury documentation and clearer causation) while remaining cases continue on individual tracks. The result is a procedurally complex MDL where settlement framework is developing incrementally rather than through comprehensive resolution.

This is how the Cook IVC filter litigation actually works through MDL 2570, the substantive theory of IVC filter failure modes, the procedural history through bellwether trials and the October 2025 partial settlement, the eligibility framework for current and prospective plaintiffs, and the strategic considerations for affected patients pursuing claims.

What IVC filters are and the alleged defects

IVC filters are medical devices designed for specific purposes:

Inferior vena cava (IVC). The largest vein in the body:

Carries deoxygenated blood from lower body to heart
Runs through abdomen and chest
Critical pathway for venous return

IVC filter purpose:

Prevent blood clots from traveling to lungs
Cause pulmonary embolism (potentially fatal)
Implanted in patients at high risk of DVT/PE
Substantial benefit when patient cannot take blood thinners

Indications for IVC filter:

Patient with deep vein thrombosis (DVT)
Cannot take anticoagulant medications (blood thinners)
Recurrent DVT despite anticoagulation
After major trauma or surgery
During cancer treatment in some cases
Other specific medical situations

Cook IVC filter products:

Cook Celect IVC Filter. Retrievable filter:

Designed for short-term placement
Intended for removal when DVT risk subsides
Multiple strut design
Substantial market penetration

Cook Günther Tulip Filter. Cook's first IVC filter:

Tulip-shaped design
Originally launched as permanent filter
Later marketed as retrievable
Substantial historical use

Alleged design defects. Plaintiffs allege:

Filter fracture. Substantial issue:

Strut metal fatigue over time
Struts break off filter
Broken pieces migrate through bloodstream
Can travel to heart, lungs, or other organs
Substantial complications

Filter migration. Entire filter moves:

From intended position in IVC
May travel to heart, lungs
Substantial complications including death
Difficult to detect without imaging

IVC perforation. Struts puncture vein wall:

Filter struts penetrate through vena cava
May damage surrounding organs
May injure aorta, bowel, kidneys
Substantial complications
Documented 100% perforation rate after 71 days (Durack et al.)

Retrieval failure. Long-term placement issues:

Filter intended for short-term but left long-term
Tissue grows around filter
Removal becomes substantially difficult or impossible
Permanent implantation by default
Substantial complications increase over time

Pulmonary embolism failure. Some cases:

Filter doesn't prevent PE as intended
Defeats primary purpose of implantation
Substantial injury when device fails to function

The alleged injuries

Plaintiffs in MDL 2570 allege various injuries:

IVC perforation with organ damage:

Bowel perforation
Kidney damage
Aortic injury
Major blood vessel damage
Substantial surgical intervention required
Permanent injury in many cases

Migration injuries:

Cardiac damage when filter migrates to heart
Pulmonary damage when filter migrates to lungs
Substantial surgical intervention often required
Substantial complications

Fracture-related injuries:

Broken struts migrating throughout body
Damage to organs from migrating pieces
Difficulty of retrieval after fracture
Substantial long-term complications

Pain and chronic complications:

Chronic abdominal pain
Back pain from filter position
Chronic discomfort
Functional limitations
Substantial quality of life impact

Retrieval surgery complications:

Substantial difficulty removing long-term filters
Risk of vessel damage during retrieval
Some filters cannot be safely removed
Need for complex retrieval procedures
Substantial procedural complications

Wrongful death. Some severe cases:

Filter migration to heart causing fatal damage
Pulmonary complications causing death
Substantial complications causing death
Substantial wrongful death framework applies

The procedural history of MDL 2570

The litigation has developed through several phases:

1999. Cook Medical launches Günther Tulip IVC Filter, initially as permanent device.

2000s. Increasing use of IVC filters in U.S. medical practice. Growing concerns about long-term complications.

2003. Cook launches Celect IVC Filter, marketed as retrievable.

Mid-2000s-2010s. Substantial market penetration. Increasing adverse event reports.

August 2010. FDA safety communication regarding retrievable IVC filters:

Long-term complications increasing
Recommended retrieval as soon as protection no longer needed
Substantial safety concerns

May 2014. Updated FDA safety communication:

More specific retrieval recommendations
Risk-benefit analysis required
Substantial regulatory pressure on long-term implantation

October 2014. Judicial Panel on Multidistrict Litigation establishes MDL 2570 in Southern District of Indiana. Senior Judge Richard L. Young assigned to oversee.

2015-2016. Substantial discovery and motion practice.

October 2017. First bellwether trial: Defense verdict for Cook Medical.

2018-2019. Several subsequent bellwether trials. Mixed results — some defense verdicts, some plaintiff verdicts.

2020-2022. Continued bellwether trials with mixed results. Some substantial plaintiff verdicts (multi-million dollars).

Throughout litigation. Substantial state court litigation in Indiana and other jurisdictions parallel to MDL.

November 2023. Court entered summary judgment for Cook in Ernie Scott v. Cook et al. — case dismissed.

2024-2025. Continued individual case proceedings. Judge Young pushing for resolution.

March 2025. Settlement discussions underway. Status conference March 20. Settlement conference scheduled April 24.

April 2025. Court set deadlines for parties to establish:

Number of pending lawsuits per injury category
Competing settlement value breakdowns
Substantial preparation for resolution framework

October 2025. Both sides reached agreement on major settlement terms for some cases. Substantial partial settlement framework. Negotiations ongoing for remaining cases.

Current status (April 2026). 6,569 pending cases. Active MDL. Partial settlement framework. No global resolution.

The bellwether trial outcomes

Mixed results have shaped litigation trajectory:

Cook's bellwether victories:

First bellwether (October 2017): Defense verdict
Subsequent bellwether trials with several Cook victories
Substantial defense litigation success

Plaintiff bellwether victories:

Several plaintiff verdicts $1M+
$3 million Indiana settlement
Substantial individual plaintiff success

Mixed result implications:

No clear pressure for global resolution
Cook can point to defense verdicts
Plaintiffs can point to substantial verdicts
Settlement valuation more complex
Individual case evaluation framework essential

Substantial individual variation. Each case:

Different injury severity
Different time of implantation
Different complications
Different state law
Substantial individual factors

The October 2025 partial settlement

The partial settlement framework provides procedural framework for some cases:

Categories of cases addressed:

Cases with stronger injury documentation
Cases with clearer causation
Cases with specific injury types
Substantial individual evaluation

Cases NOT addressed initially:

Cases with less clear injury
Cases with statute of limitations issues
Cases with substantial defendant defenses
Cases requiring additional individual evaluation

Settlement amounts: Generally not publicly disclosed:

Confidential per settlement terms
Substantial individual variation
Based on injury severity
Based on complication frequency
Based on individual case factors

Plaintiffs not in initial settlement. Substantial cases remain:

Continuing on individual tracks
May benefit from future settlement framework
May proceed to individual trial

Strategic significance. The partial framework:

Establishes settlement framework for similar cases
Creates pressure for additional cases
Provides procedural path forward
May produce additional settlements

Statute of limitations considerations

Cook has raised substantial statute of limitations defenses:

Common state limitations periods: 2-4 years from injury or discovery.

Discovery rule applicability:

Most states recognize discovery rule
Limitations begin when patient knew or should have known
Substantial individual variation
Some delayed discovery cases viable

Cook's defense. Statute of limitations:

Many filters implanted years ago
Many complications discovered well after implantation
Substantial procedural arguments
Substantial barrier for older cases

Plaintiff response. Substantial counter-arguments:

Delayed discovery of connection between filter and complications
Concealment by manufacturer of risks
Continuing tort theory (ongoing complications)
Substantial state-specific analysis required

Substantial individual analysis required. Each plaintiff's case:

Specific timeline of injury discovery
Specific medical history
Specific state law application
Substantial counsel involvement needed

Eligibility framework

The framework for current and prospective plaintiffs:

Documenting Cook IVC filter implantation

Critical first step. Identify specific product:

Surgical records (operative report)
Hospital records identifying specific filter
Manufacturer identification
Lot numbers and serial numbers
Compatible with Cook Celect or Cook Günther Tulip

Important note. Many IVC filter manufacturers besides Cook:

Bard (separate MDL 2641 in D. Arizona, largely settled with 8,600+ cases)
ALN
Argon
Boston Scientific
Cordis
Rex Medical

The specific manufacturer determines which litigation applies. Cook filters → MDL 2570.

Documenting the injury

Strong case requirements:

Imaging documentation:

X-rays showing filter
CT scans showing complications
Comparison to baseline imaging
Substantial radiological evidence

Specific injury types:

IVC perforation (struts through vena cava wall)
Filter fracture (broken struts)
Filter migration (movement from intended position)
Organ damage from filter or fragments
Pulmonary embolism despite filter (failure to function)

Treatment records:

Retrieval surgery records
Complications during retrieval
Subsequent medical treatment
Pain management
Functional limitations

Substantial connection to filter:

Medical evaluation supporting causation
Treating physician statements
Pathology of removed filter (if retrieved)
Substantial documentation of connection

Statute of limitations analysis

Most states have 2-4 year limitations:

Discovery rule may apply
Substantial individual variation
Specific state law analysis required
Some delayed discovery cases viable
Substantial counsel evaluation needed

How Cook IVC filter litigation compares to other mass torts

The litigation has distinctive features:

Compared to Bard PowerPort MDL 3081: Both involve medical device manufacturing defects. PowerPort is newer with bellwethers approaching; Cook IVC is mature MDL with mixed bellwether results.

Compared to Bard hernia mesh MDL 2846: Both involve substantial Bard medical device litigation. Bard hernia mesh reached $1+ billion settlement; Bard IVC filter MDL 2641 largely settled separately.

Compared to Stryker hip implant MDLs: Both involve medical device litigation. Stryker reached comprehensive settlements; Cook has only partial settlement framework.

Compared to Allergan Biocell MDL 2921: Both involve medical device litigation. Allergan faces substantial preemption challenges; Cook IVC doesn't face same preemption issues.

Compared to Exactech device recall MDL 3044: Both involve orthopedic/medical device defects. Exactech faces bankruptcy complications; Cook has substantial financial capacity.

Distinctive Cook IVC filter features:

Mature MDL (10+ years)
Substantial pending cases (6,569+ as of April 2026)
Mixed bellwether results
No global settlement
Partial settlement framework (October 2025)
Substantial statute of limitations defenses
Multiple manufacturer landscape (Bard, ALN, etc. — separate litigation)
Long-term implantation issue (retrieval difficulty)
100% perforation rate after 71 days documented (Durack study)

Settlement projections

Settlement valuation varies substantially:

Cases in October 2025 partial settlement:

Specific categories with stronger documentation
Substantial individual evaluation
Confidential settlement amounts
Substantial framework for similar cases

Cases continuing on individual tracks:

Higher uncertainty
May benefit from future settlement framework
May proceed to individual trial
Substantial variation in outcomes

Estimated settlement ranges (varies substantially):

Severe complication cases:

Filter migration to heart
Substantial organ damage
Multiple surgical interventions
Range: $500,000 - $5,000,000+
Wrongful death cases potentially higher

Moderate complication cases:

IVC perforation with organ involvement
Retrieval complications
Substantial functional impact
Range: $100,000 - $1,000,000

Minor complication cases:

Filter fracture without major sequelae
Successful retrieval after complications
Limited permanent impact
Range: $25,000 - $250,000

Wrongful death cases:

Substantial state law variation
Range varies dramatically by state
Substantial individual case factors

Tax implications. Personal injury settlements for physical injuries are tax-free under IRC §104(a)(2). Coordinate with tax counsel for substantial settlements, particularly when other tax debt issues or §72(t) early withdrawal considerations exist.

Strategic considerations

For affected patients and prospective plaintiffs:

Identify Cook IVC filter implantation specifically. Critical first step:

Surgical records
Hospital identification
Manufacturer verification
Distinguish from Bard or other manufacturer filters
Substantial documentation requirement

Document the injury comprehensively. Strong cases include:

Imaging studies (CT, X-ray)
Treatment records
Retrieval surgery records (if applicable)
Pathology of removed filter
Treating physician opinions
Functional impact documentation

Address the statute of limitations carefully. Cook raises substantial defenses:

2-4 year periods in most states
Discovery rule applicability
Specific state law analysis
Some delayed discovery cases viable
Substantial counsel evaluation needed

Engage experienced IVC filter counsel. Substantial procedural complexity:

MDL practice
State court coordination
Statute of limitations defenses
Bellwether outcome analysis
Settlement framework navigation
Substantial firm-specific Cook experience valuable

Consider state court alternatives. Indiana state court:

Parallel substantial litigation
Different procedural framework
May benefit some plaintiffs

Plan for extended timeline. Even after partial settlement:

Individual case evaluation
Substantial time investment
Settlement processing
Individual trial if necessary
Substantial wait for resolution

Address the filter retrieval question. Strategic consideration:

Long-term retrieval increasingly difficult
Medical indication for retrieval should dominate
Legal counsel should advise on timing implications
Substantial coordination required

Document subsequent medical treatment. Strong cases include:

All medical care related to filter
Retrieval surgery documentation
Complication treatment
Ongoing pain management
Functional impact

Coordinate with treating physicians. Vascular surgeons, interventional radiologists, and other treating physicians are important witnesses. Their assessment of causation strengthens cases.

Plan for the substantial growth loss when accessing retirement funds. Some plaintiffs:

Need retirement funds for medical expenses
§72(t) early withdrawal substantial cost
Substantial coordination required
May benefit from medical expense exception

Address related tax planning. Personal injury settlements for physical injuries are tax-free. Coordinate with tax counsel for substantial settlements. Component allocation (physical injury vs. emotional distress) affects tax treatment.

Watch the wrongful death framework. Some severe cases:

Filter migration causing death
Pulmonary complications causing death
Substantial state law variation
Estate has standing
Surviving family members may have separate claims

Document the lifestyle impact. Strong cases show:

Pre-implantation functional baseline
Loss of function post-implantation
Inability to return to work
Recreational activity loss
Daily life impact

Don't accept inadequate settlement offers without thorough evaluation. Many cases:

Substantial injury justifies more than initial offers
Negotiate based on documented damages
Consider individual trial if settlement insufficient
Substantial bellwether verdicts provide leverage

Plan for individual trial possibility. Some cases:

May proceed to individual MDL trial
May proceed to remand for individual state court trial
Substantial trial preparation
Substantial damages potential

Consider medical monitoring component. Even after settlement:

Ongoing surveillance for filter complications
Long-term medical care
Future medical expenses
Substantial ongoing considerations

Address the multiple manufacturer landscape carefully. Many IVC filter manufacturers:

Bard (largely settled in MDL 2641)
Cook (MDL 2570, partially settled)
ALN
Argon
Boston Scientific
Cordis
Rex Medical

Identify specific manufacturer; substantial different procedural framework for each.

Watch for the long-term implantation issue. Substantial pattern:

Filters intended for short-term use
Left long-term in many patients
Substantial complication risk increase
Retrieval becomes substantially more difficult
Substantial issue for many plaintiffs

Coordinate with LLC asset protection if substantial business assets at risk. Substantial settlements may affect:

Business asset planning
Estate planning
Substantial coordination required

For affected patients with documented Cook IVC filter injuries, the framework provides paths to compensation through the substantial MDL 2570 framework and the developing partial settlement structure. The mixed bellwether results have prevented global settlement but the October 2025 partial framework signals movement toward broader resolution. The work for plaintiffs is in comprehensive product identification through surgical records, thorough injury documentation including imaging studies and retrieval surgery records, engagement with experienced Cook IVC filter counsel familiar with MDL practice and the substantial statute of limitations issues, careful coordination of medical and legal timelines (particularly around retrieval surgery decisions), informed monitoring of bellwether and settlement developments, and patient navigation of the procedural complexity. For plaintiffs with strong documented filter complications — particularly perforation with organ involvement, filter migration to heart or lungs, or fracture with substantial sequelae — the litigation provides paths to meaningful compensation that should produce substantial outcomes through individual case evaluation, the developing settlement framework, and potential individual trials with substantial damages potential based on the prior plaintiff verdicts in the MDL bellwether program.