FRCP 16.1: the first federal rule written for multidistrict litigation

Multidistrict litigation has been part of federal practice since 1968, and for more than half a century it ran without a rule of its own. Transferee judges built their own procedures, borrowed from each other, and worked from the Manual for Complex Litigation.

Rule 16.1 changed that on December 1, 2025. It is the first Federal Rule of Civil Procedure written specifically for MDL proceedings.

What it does — and what it does not

Read the verbs. Rule 16.1 uses "should," not "must," in every operative provision:

• the transferee court "should schedule an initial management conference";
• it "should order the parties to meet and to submit a report";
• after the conference it "should enter an initial management order."

This is a framework, not a mandate. It gives transferee courts a common structure and a checklist of what to address, while leaving each court free to manage its own MDL.

But the report the parties submit is where the obligations bite. Once the court orders it, the report "must address" the listed matters unless the court orders otherwise.

The initial management conference

Rule 16.1(a):

After the Judicial Panel on Multidistrict Litigation transfers actions, the transferee court should schedule an initial management conference to develop an initial plan for orderly pretrial activity in the MDL proceedings.

The trigger is the JPML transfer. The purpose is an initial plan, not a full case management order — the rule contemplates that more conferences will follow, and Rule 16.1(b)(2)(C) requires the report to propose a schedule for them.

The report: leadership counsel first

Rule 16.1(b)(1): the court "should order the parties to meet and to submit a report to the court before the conference."

Rule 16.1(b)(2) sets the required content. The report "must address any matter the court designates — which may include any matter in Rule 16 — and, unless the court orders otherwise, the parties' views on":

(A) Leadership counsel, and if they should be appointed:

(i) the timing of the appointments; (ii) the structure of leadership counsel; (iii) the procedure for selecting leadership and whether the appointments should be reviewed periodically; (iv) their responsibilities and authority in conducting pretrial activities and any role in facilitating resolution; (v) the proposed methods for regularly communicating with and reporting to the court and nonleadership counsel; (vi) any limits on activity by nonleadership counsel; and (vii) whether and when to establish a means for compensating leadership counsel.

Seven sub-items on leadership alone, which reflects where MDL disputes concentrate. Item (iii)'s periodic review and item (vi)'s limits on nonleadership counsel are both responses to long-running criticisms of MDL governance — that leadership, once appointed, is never revisited, and that non-leadership lawyers with real clients can be sidelined without a say.

Item (vii) is notable for what it asks: not how much, but whether and when to set up a compensation mechanism at all. Getting that on the table at the outset is a change from the practice of leaving common benefit funds to be sorted out years later.

(B) any previously entered scheduling or other orders that should be vacated or modified;

(C) a schedule for additional management conferences;

(D) how to manage the direct filing of new actions in the MDL proceedings;

(E) whether related actions have been or are expected to be filed in other courts, and whether to adopt methods for coordinating with them.

Subparagraph (E) reaches outside the MDL entirely — to parallel state court litigation, which in mass tort practice often carries more cases than the federal proceeding.

The report: initial views on the case

Rule 16.1(b)(3): unless the court orders otherwise, the report also must address the parties' initial views on:

(A) whether consolidated pleadings should be prepared; (B) how and when the parties will exchange information about the factual bases for their claims and defenses; (C) discovery, including any difficult issues that may arise; (D) any likely pretrial motions; (E) whether the court should consider any measures to facilitate resolving some or all actions; (F) whether any matters should be referred to a magistrate judge or a master; and (G) the principal factual and legal issues likely to be presented.

Subparagraph (B) is the one that has drawn the most attention. Early exchange of the factual basis for each claim is the mechanism behind what MDL practice calls a plaintiff fact sheet or census — the tool for identifying, early, which filed claims have support. Putting it in a rule as a matter the report must address means it is on the agenda in every MDL from the first conference, rather than something a defendant has to fight for.

Subparagraph (F) matters practically: an MDL with tens of thousands of member cases cannot be administered by one district judge alone, and the rule directs the parties to say early what should be referred out.

Rule 16.1(b)(4) — permitted content: the report "may include any other matter that the parties wish to bring to the court's attention."

The initial management order

Rule 16.1(c):

After the conference, the court should enter an initial management order addressing the matters in Rule 16.1(b) and, in the court's discretion, any other matters. This order controls the course of the proceedings unless the court modifies it.

That last sentence gives the order the same controlling force Rule 16(d) gives a pretrial order. It is the operative document in the MDL until changed.

How it sits with Rule 16

Rule 16.1 does not displace Rule 16. The report "may include any matter in Rule 16," and the ordinary scheduling machinery still applies to the member cases.

Two Rule 16 provisions are worth reading alongside it.

Rule 16(b)(3)(B)(iv), as amended on the same day, lets a scheduling order "include the timing and method for complying with Rule 26(b)(5)(A) and any agreements the parties reach for asserting claims of privilege or of protection as trial-preparation material after information is produced, including agreements reached under Federal Rule of Evidence 502."

In an MDL, where document productions are enormous and privilege review is a major cost, settling the privilege-log method at the initial conference is worth more than almost anywhere else. The guide on privilege logs under the amended rules covers that change.

Rule 16(b)(3)(B)(v) allows the order to "direct that before moving for an order relating to discovery, the movant must request a conference with the court" — the pre-motion conference requirement that most MDL courts already use.

What to bring to the first conference

A short checklist

1. Expect the conference soon after transfer. The rule tells the transferee court to schedule it, and to order a report first.
2. Meet before you write. The report is a joint product of a required meeting, not a set of unilateral statements.
3. Have a leadership position ready, covering all seven sub-items — including periodic review, limits on nonleadership counsel, and whether to set up compensation now.
4. Identify every order from the member cases that should be vacated or modified.
5. Take a position on direct filing. It is the difference between a case entering the MDL in days or in months.
6. Map the parallel litigation. Subparagraph (E) asks about related actions in other courts and how to coordinate.
7. Come with a factual-substantiation proposal — how and when the parties will exchange the factual bases for claims and defences.
8. Say what should be referred out, to a magistrate judge or a master.
9. Settle the privilege-log method early, using amended Rule 16(b)(3)(B)(iv) and Evidence Rule 502.
10. Treat the resulting order as controlling. Under Rule 16.1(c) it governs until the court modifies it.

Where these rules live

• FRCP 16 — Pretrial conferences; scheduling; management
• FRCP 16.1 — Multidistrict litigation
• FRCP 23 — Class actions
• FRCP 26 — Duty to disclose; general provisions governing discovery
• FRCP 42 — Consolidation; separate trials
• FRCP 53 — Masters
• FRCP 72 — Magistrate judges: pretrial order

Rule 16.1 took effect December 1, 2025. The Judicial Panel on Multidistrict Litigation operates under 28 U.S.C. § 1407 and its own rules, which this site doesn't reproduce. This page explains what the rules say. It isn't legal advice.