In Re Meaning: Why Cases Start With “In Re”

By Steve Levine · Updated August 27, 2026 · 6 min read

Quick Answer

“In re” is Latin for “in the matter of.” A case name starts with it when the proceeding is about a subject rather than a fight between two named sides — an estate, a bankruptcy, a guardianship, a petition to a higher court, or a pile of lawsuits consolidated because they all concern the same product, breach, or conduct. That last category is why nearly every multidistrict litigation and consolidated class action you will see on this site is captioned “In re: Something Litigation.” The phrase describes what the case is about; it does not mean anyone named in it has been accused of anything.

On this page

What “In Re” Means
“In Re” vs. “v.” — Two Kinds of Case Names
Where Courts Use “In Re”
Why Class Actions and MDLs Are Captioned “In Re”
How to Read an “In Re” Case Name
If Your Class Action Notice Says “In Re”
Related Latin You'll See in Case Names

What “In Re” Means

“In re” is a Latin phrase meaning “in the matter of.” It is a label, not a claim: the court is saying that what follows names the subject of the proceeding. Most people say it “in ray,” though “in ree” is common too, and in written citation it is treated as part of the case name and italicized with it.

The phrase is doing the same job as the “Re:” line at the top of a memo — it announces the matter at hand. British and Irish courts often shorten it further to just “Re,” so “Re Julian” and “In re Julian” mean the same thing. American courts almost always write out “In re,” and many add a colon: “In re: Roundup Products Liability Litigation.” Courts are inconsistent about that colon, and nothing turns on it.

“In Re” vs. “v.” — Two Kinds of Case Names

A case name is a compressed description of who or what the court is dealing with, and there are broadly two shapes it can take.

Adversarial: Smith v. Jones. Two identified sides in a direct dispute — a plaintiff who filed and a defendant who is answering. The “v.” is short for versus.
In the matter of: In re Estate of Smith. One subject, and no opposing party on the other side of the caption. The court is administering, supervising, or deciding something about the thing or person named.

That second shape is often described as non-adversarial, which is accurate about the caption but can be misleading about the reality. Plenty of “In re” proceedings involve fierce disagreement — heirs contesting a will, creditors fighting over a bankrupt company's assets, thousands of injured plaintiffs litigating against a manufacturer. What the caption tells you is that the dispute is not structured as one named person suing another named person, so the court names the case after its subject instead.

Where Courts Use “In Re”

The phrase turns up across several corners of the court system, and the through-line is always the same: the proceeding centers on a matter, not on a matchup.

Probate and estates. A court supervising a deceased person's will and property opens a file captioned something like In re Estate of Smith. Nobody is being sued; the estate itself is the matter. This is the same proceeding that produces the appointment papers an executor or an estate administrator uses when they need to file a settlement claim on behalf of someone who has died.
Bankruptcy. Bankruptcy cases are conventionally captioned In re plus the debtor's name, because the case is the administration of that debtor's financial affairs rather than a suit against them. Individual disputes inside a bankruptcy — a trustee suing to recover a transfer, for instance — get their own “v.” captions as adversary proceedings.
Guardianship, conservatorship, and juvenile matters. A court deciding who should make decisions for a minor or an incapacitated adult is resolving a status question about that person, so the case carries their name after “In re.”
Name changes and adoptions. A petition asking a judge to approve a change of legal status has a petitioner but no respondent, which is exactly the situation “In re” exists for.
Petitions to higher courts. When a party asks an appellate court to order a lower court or an official to do something — a writ of mandamus, for example — the petition is usually captioned In re the petitioner's name, because the appellate court is not hearing a suit between the parties. Grand jury matters are captioned the same way.
Consolidated litigation. The category that matters most for class action readers, covered next.

Why Class Actions and MDLs Are Captioned “In Re”

If you have spent any time reading about mass litigation, you have seen far more “In re” captions than the probate courts could ever account for. The reason is structural. When dozens or thousands of separate lawsuits are filed around the country over the same drug, the same defective part, or the same data breach, the federal system can pull them together in front of a single judge for pretrial proceedings under 28 U.S.C. § 1407. The Judicial Panel on Multidistrict Litigation decides whether to do that and where to send the cases; the result is a multidistrict litigation, or MDL.

At that point there is no one plaintiff and no one defendant to put in the caption. Hundreds of named plaintiffs have sued, sometimes several different corporate defendants are involved, and new cases keep arriving. So the consolidated proceeding is named after its subject — the product, the incident, the conduct — with “In re” in front of it. That is where captions like these come from:

In re: Roundup Products Liability Litigation, MDL No. 2741 (N.D. Cal.)
In re: Equifax, Inc. Customer Data Security Breach Litigation, MDL No. 2800 (N.D. Ga.)
In re: 3M Combat Arms Earplug Products Liability Litigation, MDL No. 2885 (N.D. Fla.)
In re: MOVEit Customer Data Security Breach Litigation, MDL No. 3083 (D. Mass.)

Read one of those captions and it tells you almost everything about the shape of the case: what it is about, that many suits were folded into it, and which court is handling the pretrial work. The individual cases inside an MDL keep their own “v.” names, which is why a single plaintiff's suit can appear under both — filed as Doe v. Manufacturer, transferred into In re: Product Liability Litigation, and eventually remanded back to its home court under its original name if it is not resolved first.

State courts do the same thing under their own labels. California consolidates related cases into a Judicial Council Coordination Proceeding, and coordinated state matters are frequently captioned “In re” as well. And the convention is not limited to mass torts: consolidated antitrust, securities, and privacy class actions routinely carry “In re” captions once several competing complaints are merged into one operative case.

How to Read an “In Re” Case Name

The words after “In re” are the subject, and they are usually packed with information. In a mass litigation caption the pattern is typically the product or defendant, then the theories being pursued, then the word “Litigation” — so In re: Hair Relaxer Marketing, Sales Practices and Products Liability Litigation is telling you the case covers marketing claims, sales practices, and product liability claims about the same category of product.

If you want that read done for you on a live caption, our blog post on why case names start with “In re” walks through a real MDL caption segment by segment.

A few reading notes that save confusion:

The name after “In re” is not an accused party by virtue of appearing there. In a bankruptcy or a guardianship it is the person whose affairs the court is handling. In an MDL it is often the product rather than any company at all.
“In re” cases still have a docket number, a judge, and a court, and their filings are public. You can pull them the same way you would any other case — see our guide to PACER for how the federal docket system works.
An MDL caption does not tell you whether the case is a class action. MDLs and class actions are different tools that often overlap; an MDL can contain class claims, individual injury claims, or both, and only a judge's certification order creates a class.
Nothing about the caption predicts the outcome. Early rulings in a consolidated case often come out of a bellwether trial, which tests representative cases rather than deciding everyone's at once.

If Your Class Action Notice Says “In Re”

Settlement notices and claim forms carry the official case caption, so a postcard or email about a settlement will often name a proceeding like In re: Something Data Security Breach Litigation. That caption is doing nothing more than identifying the case file. It does not mean you are a party to a lawsuit, that anyone is claiming money from you, or that a court has found the defendant did anything wrong.

What the notice does mean is that a court has approved a plan to tell people who may be affected that they have choices — file a claim, do nothing, exclude themselves, or object. Our explainer on why you got a class action notice walks through each of those options, and opting out covers what you give up and keep by excluding yourself. Filing a claim is always free on the official settlement website, and you never need a lawyer to do it.

A handful of other Latin tags show up in captions and are easy to mix up with “in re.”

In rem — a proceeding directed at property itself rather than at a person, which is why forfeiture cases can be captioned against an object or a sum of money. Related idea, different phrase.
Ex parte — something done by or for one side without the other present, such as an emergency application. Older case names sometimes use it where a modern court would write “In re.”
Ex rel. — short for ex relatione, “on the relation of,” used when a case is brought in the government's name at the instance of a private party. That is the standard caption in qui tam whistleblower suits.
Pro se — representing yourself without a lawyer. Explained in our pro se guide.

For a short reference definition of the phrase itself, Cornell Law School's Legal Information Institute maintains an entry on in re in its Wex legal dictionary.

Frequently Asked Questions

What does “in re” mean in a court case?

In re is Latin for “in the matter of.” Courts put it at the front of a case name when the proceeding is about a subject rather than a fight between two named sides — an estate, a bankruptcy, a guardianship, a petition to a higher court, or a group of lawsuits consolidated because they all concern the same product or event.

What is the difference between “In re Smith” and “Smith v. Jones”?

A “v.” caption names two opposing sides: Smith is suing Jones. An “In re” caption names the subject of the proceeding instead. The name that follows “In re” is usually the person, estate, company, or litigation the court is dealing with — not someone being accused of anything.

Why are MDLs and class actions named “In re”?

When many separate lawsuits over the same product, data breach, or conduct are consolidated into one proceeding, there is no single plaintiff and no single defendant to name. Courts caption the consolidated proceeding after its subject instead — for example, In re: Equifax, Inc. Customer Data Security Breach Litigation.

I got a class action notice captioned “In re” — am I being sued?

No. “In re” signals that the case is named after its subject matter, not after any individual. Receiving a notice means a court believes you may fall within a class of people affected by the case, and the notice explains your options — file a claim, do nothing, opt out, or object. It is not an accusation and it is not a bill.

How is “in re” pronounced and written?

It is usually said “in ray,” though “in ree” is also common. In legal citation it is treated as part of the case name and italicized along with it. Some courts write it with a colon (In re: Roundup Products Liability Litigation) and some without; both refer to the same proceeding.

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In Re: Why Some Case Names Start With “In Re” Instead of “v.”

What “In Re” Means

“In Re” vs. “v.” — Two Kinds of Case Names

Where Courts Use “In Re”

Why Class Actions and MDLs Are Captioned “In Re”

How to Read an “In Re” Case Name

If Your Class Action Notice Says “In Re”

Frequently Asked Questions

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In Re: Why Some Case Names Start With “In Re” Instead of “v.”

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How to Read an “In Re” Case Name

If Your Class Action Notice Says “In Re”

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