Koop v. United States’s Empirical Analysis
296 F.2d 53 · 1961
Citation profile
34 federal appellate · 1 district · 2 state decisions
How this case has been cited
Cited by 38 later decisions — most recently February 1988 · most notably Koolish v. United States (1965), Harold Hanger v. United States of America, Gale Mixen v. United States of America, Loretta Meyer v. United States (1968)
34 federal appellate · 1 district · 2 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.
Relationships
Applies 16 U.S.C. § 701 · 18 U.S.C. § 2
Relies on Missouri v. Holland · Natural Gas Pipeline Co. of America v. Harrington · Amlin v. Verbeem · Caudle v. United States · Connelly v. United States
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 38 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“It is common knowledge that ducks, and particularly mallard ducks, lend themselves to being tamed or domesticated and that ducks generally found in most farmyards trace their ancestry back to the wild and untamed ducks with whose protection and care the Migratory Bird Treaties and regulations were concerned. Concededly, however, the law was not meant for, nor may it regulate or control the use of, such tamed or domesticated ducks.”
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.