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Antitrust — MDL No. 2918

Hard Disk Drive Suspension Assemblies

U.S. District Court for the Northern District of California

Hard Disk Drive Suspension Assemblies Antitrust Litigation consolidates claims that manufacturers of precision suspension assembly components — mechanical parts that position the read/write head inside a hard disk drive — coordinated pricing sold to purchasers of those components, a fact pattern that, over the docket's history, has also intersected with parallel criminal antitrust enforcement targeting the same industry. Centralized in the Northern District of California in 2019, the docket carries 30 pending actions after roughly six years of litigation.

What drives resolution risk here follows a familiar pattern for component-level price-fixing cases: the docket separates into direct-purchaser and indirect-purchaser tracks, each with its own damages methodology and class-certification posture, and how far each track has progressed can differ meaningfully even within the same MDL. Given the docket's multi-year history, courts have had substantial time to develop the factual and economic record on the alleged conspiracy's scope, which narrows the range of open liability questions relative to when the docket was newly centralized.

For anyone tracking how component-level manufacturing antitrust claims resolve when they intersect with parallel criminal enforcement, this docket is a instructive example of how a private civil MDL and government enforcement activity in the same industry can develop concurrently, with developments in one informing the pace and evidentiary record of the other. Criterica Intelligence's platform tracks this kind of cross-track dynamic — private MDL litigation running alongside related government enforcement — across every active MDL where it is relevant.

Frequently Asked Questions
What conduct is alleged in this MDL?

Plaintiffs allege manufacturers of precision suspension assembly components used inside hard disk drives coordinated pricing sold to purchasers of those components, conduct that also drew parallel criminal antitrust scrutiny in the same industry.

Why does this docket separate direct and indirect purchaser claims?

Direct and indirect purchasers sit at different points in the distribution chain and face different legal standards for standing and damages, so the MDL manages them as separate tracks that can progress at different speeds.

How does parallel criminal enforcement affect a private antitrust MDL like this one?

Criminal antitrust enforcement targeting the same industry can develop concurrently with the private civil litigation, and evidence or admissions from the criminal track can inform the pace and evidentiary record of the civil claims, though the two proceed on separate legal tracks.

What happens to a case in this MDL if it does not settle?

It proceeds through continued discovery and dispositive motions specific to its purchaser track — direct or indirect — following the docket's established factual record on the alleged conspiracy's scope.

Statistics shown reflect historical or illustrative model outputs derived from real case data. They are not predictions or guarantees of any individual outcome. Litigation results depend on facts, jurisdiction, judge, and counsel, and vary case by case. Model accuracy is subject to selection effects and changing legal dynamics.

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