Definition
Latin: "in the matter of." A case caption prefix indicating that the proceeding concerns a subject matter or named party rather than a dispute between two adversarial parties. Where ordinary civil litigation is styled Plaintiff v. Defendant, an "in re" proceeding is structured around a res — a thing, estate, status, or legal question — over which a court exercises jurisdiction.
In re appears most commonly in:
(1) Probate and estate proceedings, where the court administers a decedent's estate rather than adjudicating a dispute between named opponents.
(2) Bankruptcy proceedings, where the debtor's estate is the subject of judicial action.
(3) Juvenile court matters, where proceedings concerning a minor are typically non-adversarial in form even when they determine significant rights.
(4) Guardianship, conservatorship, and mental health commitments, where a court acts on behalf of a person who may lack legal capacity.
(5) Regulatory and administrative proceedings styled as judicial matters, such as proposed public works or highway dedications.
(6) Disciplinary proceedings against attorneys or other licensed professionals, where no private plaintiff exists.
The phrase does not indicate the absence of legal stakes or contested issues. Many in re proceedings are intensely contested. It signals form, not conflict level.
Common Language
Modern common usage (Wiktionary): "In the matter of; with regard to."
Historical common usage: The phrase is Latin and was not part of ordinary English vocabulary; it entered common usage through legal documents, correspondence headings, and business memoranda, where it survives today in the abbreviated form "Re:" in email and letter subject lines.
Editorial note: In everyday use, "Re:" means simply "regarding" or "about" and carries no procedural significance. In legal usage, "in re" is a formal term of art designating a specific type of court proceeding. A researcher encountering "Re:" in a business letter and "In re" in a court filing should not treat them as equivalent — the legal form signals a defined procedural category with consequences for jurisdiction, notice, and the structure of the record.
Common Confusion
In re is sometimes conflated with ex parte. Both describe proceedings that lack the traditional plaintiff-defendant structure, but they are distinct. Ex parte refers to a proceeding or communication involving only one side — often urgent, often without notice to an opposing party, and often temporary in effect. In re describes a proceeding organized around a subject matter, which may involve multiple parties, full notice, and final adjudication. A bankruptcy case is in re because it concerns an estate, not because it is one-sided. An emergency restraining order may be ex parte because it was obtained without notice. The two concepts occasionally overlap but should not be used interchangeably.
Why It Matters in Research
Caption searching in legal databases requires understanding that in re proceedings are indexed and retrieved differently from adversarial cases. A researcher looking for juvenile rights cases, bankruptcy opinions, or probate decisions must search case names beginning with "In re" — often followed by a personal name, an estate name, or a subject-matter descriptor. Failing to use the correct caption form will produce missed results.
Jurisdictional variation in caption conventions affects historical research. Some courts historically used "In the matter of" as a full caption phrase rather than "In re," and older reporters may index the same proceeding type under either form. Researchers in probate or chancery records prior to the twentieth century should search both formulations.
The phrase also appears in embedded Latin maxims within older legal texts — Burrill's in particular quotes maxims beginning "In re dubia..." — which are distinct from case captions. Context distinguishes the two uses.
Landmark cases titled "In re" carry the name forward even in subsequent doctrinal discussion. In re Gault, In re Winship, and In re Debs are shorthand for major legal developments. Researchers must recognize that these titles reflect the nature of the original proceedings (juvenile court, standards of proof, labor injunction) rather than indicating a specific area of substantive law.
Historical Dictionary Support
Black's (both editions), Rapalje & Lawrence, and Burrill's are in close agreement on the core definition: "in the matter of," used to title proceedings lacking adversary parties. Black's both editions give identical examples — bankrupt's estate, probate court, proposed public highway — illustrating that the phrase has been associated with the same core proceeding types across more than a century of usage.
Burrill's adds texture by noting Lord Coke's commentary and including the Latin maxim "In re dubia, benigniorem interpretationem sequi, non minus justius est quam tutius" (in a doubtful matter, to follow the more liberal interpretation is not less the juster than the safer course), sourced to Digest 50.17. This reflects the older habit of legal dictionaries treating Latin phrases as gateways to maxim collections — useful for understanding historical legal reasoning but distinct from the procedural meaning of the caption.
Rapalje & Lawrence add the partnership maxim "In re communi potior est conditio prohibentis," flagging that "in re" appears in Latin legal maxims beyond the caption context. Historical sources generally do not address the twentieth-century expansion of in re captions into constitutional litigation — juvenile rights, due process, and criminal procedure — where the caption became associated with landmark Supreme Court decisions. That development is absent from these dictionaries and must be sourced elsewhere.
Jurisdictional Note
Federal and state courts both use in re captions, but conventions differ. Federal bankruptcy proceedings are uniformly styled "In re [Debtor Name]." State probate and family courts vary — some use "In the matter of," others use "In re," and some use both interchangeably. Researchers working across jurisdictions should treat the two formulations as functionally equivalent unless a specific court's rules assign distinct meanings.
Encyclopedia Cross-Reference
Juvenile Rights (In re Gault and Progeny) — The Law Mind Criminal Law Encyclopedia
Burden of Proof — Beyond a Reasonable Doubt (In re Winship) — The Law Mind Criminal Law Encyclopedia