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2026-09-21

Rule 16.1 and the early MDL information exchange: what changes for both sides

Rule 16.1, the first federal rule written specifically for multidistrict litigation, took effect December 1, 2025.

The transfer order from the Judicial Panel on Multidistrict Litigation is still open when the conference order arrives: submit a joint report proposing how to exchange the factual bases for claims and defenses. A plaintiffs’ paralegal starts sorting intake questionnaires from scanned medical records. Across the litigation, a defense associate opens a blank partner briefing, facing the same question: what will each file support, and where are the holes?

Rule 16.1 gives MDL judges a framework for bringing early information exchange into the initial management conference. Parties propose how and when to exchange the factual bases for claims and defenses; the rule itself creates no new production duty. At Turbo Law, we approach that preparation case by case, with facts tied to source pages and apparent record gaps identified.

What is Federal Rule of Civil Procedure 16.1?

Federal Rule of Civil Procedure 16.1, Multidistrict Litigation, supplies an initial management framework for MDLs and is the first Federal Rule of Civil Procedure written specifically for those proceedings. It took effect December 1, 2025.

The judge retains discretion.

After transfer, Rule 16.1(a) says the transferee court should schedule an initial management conference; subsection (b) says it should order the parties to meet and submit a report before that conference. Subjects extend beyond exchanging case information. Leadership arrangements belong on the agenda, along with discovery and likely motions, and coordination with related actions.

But flexibility belongs to the court. Once a report is ordered, counsel must address the listed subjects unless the court directs otherwise, plus any additional subjects the court designates. Calling the agenda a menu does not give the parties permission to omit a difficult topic.

Under Rule 16.1(c), the court should then enter an initial management order, which controls the proceedings unless modified. The rule and its 2025 Committee Note distinguish the court’s freedom to tailor management from the parties’ obligations when preparing an ordered report. LII / Legal Information Institute

What does the early information exchange under Rule 16.1(b) cover?

Counsel’s initial views on how and when to exchange the factual bases for claims and defenses belong in the Rule 16.1(b)(3)(B) discussion. At this stage, the assignment is to propose an exchange, rather than automatically deliver every record supporting a position.

Start with the proposed questions.

In a hypothetical product-liability MDL, an initial exchange might ask about product identification and alleged injury, leaving supporting records to follow on an agreed schedule that accounts for what the parties can reasonably obtain. Defendants might supply the factual basis for disputing identification or asserting a case-specific defense. Those are possible proposals, not requirements the rule independently imposes.

Plaintiff fact sheets and census forms offer possible formats. Neither is mandatory. The Committee Note also allows for court-ordered exchanges outside discovery or exchanges conducted through discovery procedures.

We would test the proposed deadline against the file before agreeing to it. A treatment-history field takes little effort to add to a form. Answering it may depend on a provider that has not responded to a records request. Put that dependency into the discussion before the proposed schedule reaches the judge.

What is Federal Rule of Civil Procedure 16.1?

The judge retains discretion.

What does the early information exchange under Rule 16.1(b) cover?

Start with the proposed questions.

How are MDL judges applying Rule 16.1 so far?

Courts have taken different approaches, with some requesting reports that track the rule and others directing attention to selected subjects.

Sidley’s February 19, 2026 update, “New Year, New Rule: A Fresh Framework for Multidistrict Litigation”, describes that variation and notes that courts invoked the framework even before its effective date. It supplies no basis for assuming a uniform national exchange protocol. Sidley Austin LLP

Read the conference order first.

Our practical inference is that counsel should bring a proposal they can explain from the files, rather than wait for the judge to choose a familiar fact-sheet process and then investigate whether the team can complete it. Identify what is available now. Explain what requires further collection, and put disagreements about sequencing into the proposal. Attaching a draft form leaves those questions open.

What changes for plaintiffs’ leadership and for defendants?

Both sides have reason to examine individual case support earlier, before committing to the scope and timing of an exchange. An intake answer cannot quietly become a documented fact merely because someone copied it into a proposed response.

Plaintiffs’ leadership may encounter an intake questionnaire naming a product beside a medical record that describes a procedure without identifying that product. The connection still needs checking. Another document may establish it; otherwise, counsel needs to recognize the outstanding follow-up before approving the answer.

A defense associate faces a similar problem when reviewing an internal sales record. Before relying on the absence of an entry to dispute a transaction, the associate needs to understand what the record covers and what it leaves out. Silence alone does not resolve that question.

MDL claim vetting runs both ways.

Federal Rule of Civil Procedure 11(b)(3) requires evidentiary support for factual contentions in covered court submissions, while allowing specifically identified contentions likely to gain support after reasonable investigation or discovery. Keep that qualification visible. Rule 11 separately addresses factual denials and excludes discovery disclosures, requests and responses from its operation.

Later records can require another look at an earlier answer. Federal Rule of Civil Procedure 26(e) requires supplementation or correction of covered disclosures and discovery responses when its conditions are met. An exchange ordered outside discovery needs separate attention: examine the MDL order’s update provisions rather than assume every census answer falls within Rule 26(e).

What makes a case-level information exchange hold up?

A reviewer should be able to find the support for an answer and see its limits without reconstructing the file. Even a short response on a court-approved form needs that work behind it.

We would check the following before approval:

Trace the statement to its source. Record the supporting document and page. An intake interview may be the source, but identify it as an interview rather than treating the recollection as an independently documented event.
Name the outstanding record. Assign follow-up to someone on the team and distinguish a request awaiting a response from one nobody has sent.
Keep dates attached to the right event. A treatment date and the date a provider signed the note serve different purposes. An approximate date should remain approximate.
Leave discrepancies visible. An intake answer may conflict with a prescription history or business record. Flag the conflict for review instead of selecting the entry that makes the proposed response easier to finish.
Connect new records to earlier answers. When incoming material changes the picture, identify the response requiring review and send it to the person responsible for assessing supplementation.
Record reviewer approval. Preserve who checked the source and who approved the exchange. Make unresolved questions clear to the reviewing lawyer.

Blank is not an explanation.

A field may be empty because the question does not apply, because nobody knows the answer, or because a supporting document has yet to arrive. Each calls for different follow-up. We think the safer habit is to make the reason visible while the file is still with its preparer.

Before the meet-and-confer, ask the proposed reviewer to complete the draft form against an actual file. An ambiguous question is easier to address there than after it has generated inconsistent responses.

How does a matter workspace organize facts case by case in an MDL?

We read each matter’s whole file and connect its facts to their supporting pages, keeping the individual case visible even where the litigation shares common issues.

Turbo Law Review reads pleadings and productions together with correspondence, deposition transcripts, expert reports and work the team has already prepared. From those materials, it builds a connected picture of the case. Chronologies flag gaps where records appear to be missing, and questions about the file receive cited answers. Incoming records update that picture.

A reference is not the missing record.

Suppose a treatment entry mentions an earlier consultation, but the consultation note is absent: the entry supports saying that the consultation was referenced, while leaving the contents of that visit unresolved. We want the reviewing lawyer to see that distinction before approving a fact-sheet answer.

Through our Assistant, a team can assign multi-step work across the matter, such as locating support for proposed responses and flagging questions the file cannot answer. The resulting work product carries line citations for attorney review. It does not serve, file or send anything.

Review and drafting use the same case picture; the firm’s DMS remains the system of record. Counsel still determines what belongs in the exchange. We do not decide claim validity, determine the court’s requirements or provide legal advice.

FAQ

What is the difference between Rule 16.1 and Rule 26(f)?

Discovery planning is the focus of Rule 26(f), whereas Rule 16.1 addresses initial MDL management, including leadership and coordination questions that extend beyond discovery. Rule 16(b) addresses scheduling. These provisions operate alongside each other, so check the transferee court’s directions for coordinating the obligations.

Does Rule 16.1 require plaintiff fact sheets?

The rule prescribes no particular form. Whether the parties must complete plaintiff fact sheets, a census or another exchange depends on what the court orders.

When is the Rule 16.1 report due?

Start with the conference order. Submission is contemplated before the initial management conference, but Rule 16.1 establishes no fixed nationwide filing interval. The Rule 26(f) reporting timetable should not be assumed to supply the missing deadline.

Does Rule 16.1 apply to MDLs that began before December 1, 2025?

Pending proceedings can fall within its reach. Under the Supreme Court’s April 23, 2025 adoption order, the changes govern newly commenced proceedings and pending proceedings insofar as just and practicable. supremecourt.gov That does not automatically restart an established MDL’s management process. Check the existing orders and any directions from the transferee court applying Rule 16.1 before preparing a new report.

Sources

FAQ

What is the difference between Rule 16.1 and Rule 26(f)?

Does Rule 16.1 require plaintiff fact sheets?

The rule prescribes no particular form. Whether the parties must complete plaintiff fact sheets, a census or another exchange depends on what the court orders.

When is the Rule 16.1 report due?

Does Rule 16.1 apply to MDLs that began before December 1, 2025?