Case Treatment Classification Guide

In brief

The guide is organized around a single practical question, the one every litigator asks before citing a case: "Can I still rely on this case, and if so, to what extent?" Its answer begins by rejecting the unit most research tools work with. Treatment, in this guide, attaches to specific holdings rather than to whole cases. A single later opinion may overrule one holding of an earlier case, distinguish a second and follow a third, and a classification that speaks only about "the case" loses exactly the information a brief writer needs.

Three dimensions of every classification

Each treatment is described along three axes.

• Scope: what was touched. The entire case, a specific holding, a factual application, or dicta.
• Severity: how much damage (or support) the later decision does to the cited case's authority.
• Mechanism: the legal process through which the treatment operates, such as appellate reversal, legislative supersession or doctrinal shift.

Separating the three prevents a common confusion. A reversal on direct appeal and a slow doctrinal erosion can both be serious, but they arrive by different routes and call for different follow-up research.

Four families of treatment

The vocabulary is grouped by the signal it sends.

• Negative (red; do not cite without caveats): Overruled (express repudiation by a court with hierarchical authority), Abrogated (implicit overruling through logically incompatible holdings), Reversed (overturned on direct appeal), Vacated (judgment set aside as a legal nullity), and Superseded by Statute (legislative override).
• Cautionary (orange or yellow): Questioned (validity expressly doubted), Criticized (reasoning faulted, not the result), Undermined (implicit weakening through doctrinal erosion), Limited (narrowed as a matter of law), and Distinguished (found inapplicable on the facts, which is itself neutral).
• Positive (green): Followed (applied as controlling authority), Affirmed (upheld on direct appeal), and Adopted or Approved (reasoning endorsed).
• Neutral: Cited, Discussed and Explained, meaning substantive engagement without taking a position.

The distinctions that cause most errors

The guide singles out several boundaries that classifiers, human or machine, routinely blur. Holdings and dicta are different objects, and dicta cannot be "overruled" in the strict sense. Procedural posture matters: a ruling on a Rule 12(b)(6) motion and a summary judgment ruling resolve different questions, so their treatment should not be read interchangeably. Distinguished and Limited are not synonyms; the first is a factual finding that leaves the holding intact, while the second narrows the holding as a matter of law. And a later case that merely discusses the same subject does not treat an earlier one unless it substantively engages it.

Over all of this sits a single governing philosophy: when in doubt, over-flag rather than under-flag. A false alarm costs a reader a few minutes. A missed negative treatment can cost a motion.

The full guide goes further than this summary, with decision flowcharts, a catalogue of common errors, worked examples and a scholarly apparatus. Its holding-level approach anticipates the first of the four questions in Good Law for What?, and the vocabulary is maintained on the Institute site as the Case Treatment Taxonomy.

This page is a summary, not the guide itself. Read the full Case Treatment Classification Guide on Medium, where Ross Brodskiy first published it on 2 April 2026.