Definition
A Latin phrase meaning "an entire" or "untouched thing." In legal usage, res integra denotes a point of law that has not yet been decided by any court — an open question, a matter of first impression. When a court confronts a res integra, it is not bound by precedent because none exists; the question arrives before the tribunal wholly unresolved.
The phrase carries two related but distinct emphases depending on context:
1. Procedural/decisional: A legal issue on which no authoritative ruling has been made. The court must reason from principle, analogy, or statutory construction rather than from established case law.
2. Civilian/transactional: In Roman and civil law, a matter still "entire" or unconsummated — a transaction not yet acted upon, such as a contract of sale before payment of the price has been completed. In this sense integra describes the untouched or uncommitted status of an obligation or transaction, which retained the quality of being open to reconsideration or rescission.
Modern common law usage overwhelmingly employs sense (1). Sense (2) survives primarily in scholarly treatment of Roman and civil law sources.
Common Language
Modern common usage (Wiktionary): "A new point that has not previously been decided in law."
Historical common usage: The Latin components — res (thing, matter) and integra (whole, untouched, fresh) — carried no specialized common English meaning; the phrase remained a term of art.
The Wiktionary definition is accurate as far as it goes but collapses two meanings into one. The critical legal nuance is not merely novelty but the absence of binding or persuasive precedent, which has direct consequences for how a court reasons and how an advocate must frame the argument. A matter may be factually novel without being res integra; the term speaks to the state of the law, not the facts.
Common Confusion
Res integra is sometimes loosely used as a synonym for "case of first impression" (nova causa, res nova). The terms overlap significantly but are not identical in origin. Res nova emphasizes the novelty of the subject matter; res integra emphasizes that the subject has been left untouched — entire, unacted upon. In practice, courts and commentators use both phrases interchangeably, and the distinction rarely affects outcomes. Researchers should expect to find either phrase in historical sources discussing unsettled legal questions.
Res integra should not be confused with res judicata (a matter already decided and therefore foreclosed) — the concepts are near opposites on the spectrum of judicial resolution.
Why It Matters in Research
The practical significance of spotting res integra in historical legal sources is that it flags where courts were operating without precedential anchor. In 18th- and 19th-century English and American reports, the phrase often signals that the court is about to reason from first principles, equity, or civilian doctrine — making those passages unusually rich for understanding the foundational logic of a legal rule before it hardened into precedent.
Researchers mining equity opinions, early commercial law decisions, or common law tort cases will encounter res integra most frequently at doctrinal inflection points. When a treatise writer or judge calls something res integra, look closely at the reasoning that follows: that passage often contains the authoritative articulation of the rule as it was first being formed.
In the Law Mind corpus, arguments structured around res integra typically appear alongside invocations of general principle, Roman law analogies, and natural law reasoning — not citation chains. Adjust search strategies accordingly: term-of-art searches paired with phrases like "no authority," "matter of first impression," or "res nova" will surface related material that does not use the Latin tag explicitly.
The transactional sense (sense 2 above) appears in historical sources on contract and sale, particularly in annotations to Roman and civil law texts. Do not assume the civilian usage and the common law usage are interchangeable when reading mixed-tradition sources such as Story's treatises or early Louisiana jurisprudence.
Historical Dictionary Support
The historical sources converge on the core meaning but add useful texture.
Burrill's Law Dictionary is the most complete of the shelf sources. It roots the term firmly in Roman civil law — "a thing not acted upon; a thing as it was; a thing entire or untouched; a thing not made the subject of action or decision" — and equates it with res nova. Crucially, Burrill captures the transactional dimension: "A thing was said to be integra, until something was begun to be done about it." This formulation shows that the concept tracked the moment of commitment in a legal relationship, not merely the novelty of a legal question.
Rapalje & Lawrence pivot to the common law usage with economy: "a subject not yet decided on; an open question of law." This is the working definition most useful to practitioners and is how the term functions in Anglo-American legal argument.
Black's Law Dictionary, in the fragment preserved, offers the compressed formulation "a whole thing; a new or unopened thing" — adequate but less instructive than Burrill.
None of the historical dictionaries adequately address the argumentative function of the term in appellate practice: when counsel labels an issue res integra, they are simultaneously acknowledging the absence of direct authority and inviting the court to exercise independent judgment. That rhetorical dimension is not captured in the definitional sources and must be inferred from the case literature itself.
Jurisdictional Note
The term appears in both common law and civil law jurisdictions, but the transactional sense (sense 2) is more likely to surface in civilian or mixed-jurisdiction sources — particularly Louisiana, Quebec, and Scottish legal materials. In purely common law jurisdictions, res integra functions almost exclusively as a label for an unresolved question of law.