Hahn v. Wong’s Empirical Analysis
892 F.2d 1028 · 1989
Citation profile
6 federal appellate · 7 district ·
How this case has been cited
Cited by 43 later decisions — most recently February 2024 · most notably Cooper v. Goldfarb (1998), Procter & Gamble Co. v. Teva Pharmaceuticals USA, Inc. (2009)
6 federal appellate · 7 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.
Relationships
Applies 35 U.S.C. § 135
Relies on Berry v. Webb · Reese v. Hurst · Womack v. Merit Systems Protection Board · Oka v. Youssefyeh
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 43 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“[t]he inventor . . . must provide independent corroborating evidence in addition to his own statements and documents.”
4 later decisions quote this exact passage · from the majority“To establish reduction to practice of a chemical composition, it is sufficient to prove 'that the inventor actually prepared the composition and knew it would work.'”
2 later decisions quote this exact passage · from the majority“affiants' statements that by a certain date they had `read and understood' specified pages of Stephen Hahn's laboratory notebooks did not corroborate a reduction to practice . . . because they established only that those pages existed on a certain date. . . [and] did not independently corroborate the statements made on those pages”
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.