Pickhardt v. Packard’s Empirical Analysis
22 F. 530 · 1884
Citation profile
3 federal appellate · 1 district ·
How this case has been cited
Cited by 12 later decisions (2 by the Supreme Court) — most recently January 1946
3 federal appellate · 1 district ·
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 12 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
““The claim of the patent is not to be construed as one for his coloring matter, obtained by any method or process of treating the alpha-naphthol sulpho-acids with nitric acids, but for any method of treatment which is the equivalent of the process described, because it produces like results. The claim is capable of this construction, and should be construed so as, if possible, to secure the real invention to the patentee.””
1 later decision quote this exact passagee.g. Matheson v. Campbell““As a new manufacture, the coloring matter or sulpho-acid of dinitro-alpha naphihol obtained from the action of nitric acid upon the within described alphanaphthol snlpho-acids, substantially in the manner set forth, or by any other method which will produce a like result.””
1 later decision quote this exact passagee.g. Matheson v. Campbell
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.