Multidistrict litigation

What is multidistrict litigation?

Multidistrict litigation, commonly called MDL, is a federal procedure consolidating related cases filed in different federal courts across the country into a single court for coordinated pretrial proceedings.

It applies where numerous cases share common factual questions, most frequently arising from a defective drug, medical device or product causing similar harm to many different people nationwide.

Unlike a class action, each individual case generally retains its own separate identity and eventual trial, even while pretrial proceedings are coordinated together in this single forum.

Understanding this specific procedure matters because it frequently applies to mass tort cases, shaping how a widespread injury claim actually proceeds through the federal court system.

What happens during this coordinated pretrial process?

Several distinct activities occur within this centralized proceeding before cases eventually return to their originating courts.

• Shared discovery addressing common factual and scientific questions across all the related cases
• Coordinated expert witness discovery and testimony
• Resolution of common legal questions applicable across the entire group of cases
• Sometimes, selected bellwether trials testing how juries respond to representative cases
• Cases may return to their originating courts for individual trial once pretrial proceedings conclude

Why does this coordination genuinely benefit both plaintiffs and defendants?

Because establishing the core scientific and corporate conduct evidence common to every case would otherwise require duplicating enormous effort across many separate, disconnected courts.

This coordination allows the parties, and the courts themselves, to more efficiently address common questions once, rather than repeating the same discovery battles in every individual jurisdiction.

This benefits injured plaintiffs directly, since it generally accelerates the pace at which cases can meaningfully progress compared to proceeding entirely separately in scattered courts nationwide.

What happens to your own individual case within this broader coordinated process?

Your specific case retains its own facts, injuries and damages throughout, even while benefiting from the shared discovery and expert evidence developed across the broader coordinated proceeding.

Bellwether trials, where they occur, test how juries respond to a small number of representative cases, which can meaningfully inform settlement negotiations across the entire group.

Your own attorney continues representing your specific interests throughout this coordinated process, even while your case benefits from the broader collective litigation effort.

Common questions

Is this the same as a class action?

No. Your own individual case generally retains its own separate identity and eventual outcome, unlike a class action where claims are typically resolved collectively as a group.

What is a bellwether trial within this type of proceeding?

A trial of a small number of representative cases, testing how juries respond to the underlying evidence, which can meaningfully inform settlement negotiations across the entire coordinated group.

Does my case eventually return to its original court after this coordinated process concludes?

Often yes, for individual trial, once the shared pretrial proceedings addressing common questions have concluded, though many cases settle before reaching that specific point.