O'Brien v. Amerman’s Empirical Analysis
1922
Citation profile
3 federal appellate · 27 state decisions
How this case has been cited
Cited by 30 later decisions — most recently August 2000 · most notably FM Properties Operating Co. v. City of Austin (2000), Steinhort v. Commissioner of Internal Revenue (1964)
3 federal appellate · 27 state decisions
Later decisions citing this case, by decade. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Most-quoted passages
The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 30 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“substantial grounds for the classification.”
1 later decision quote this exact passage · from the majority
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.