Piper Aircraft Co. v. Reyno’s Empirical Analysis
1982
Citation profile
976 federal appellate · 990 district · 881 state decisions
How this case has been cited
Cited by 5,775 later decisions (27 by the Supreme Court) — most recently March 2026 · most notably Pierce v. Underwood (1988), Quackenbush California Insurance Commissioner v. Allstate Insurance Co (1996)
976 federal appellate · 990 district · 881 state decisions — followed in 35 states
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.
Appellate journey
reviewedReyno v. Piper Aircraft Co. (from Third Circuit Court of Appeals)
Relationships
Applies 28 U.S.C. § 1404
Relies on Erie Co v. Tompkins · Klaxon Co. v. Stentor Electric Manufacturing Co. · Gulf Oil Corporation v. Gilbert · Van Dusen v. Barrack
Cited together with Gulf Oil Corporation v. Gilbert · Koster v. Lumbermens Mut Casualty Co · International Shoe Co. v. Washington · Van Dusen v. Barrack · Lauritzen v. Larsen
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 5,775 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“relative ease of access to sources of proof; availability of compulsory process for attendance of unwilling, and the cost of obtaining attendance of willing, witnesses; possibility of view of premises, if view would be appropriate to the action; and all other practical problems that make trial of a case easy, expeditious and inexpensive.”
305 later decisions quote this exact passage · from the majority“unless the balance is strongly in favor of the defendant, the plaintiff's choice of forum should rarely be disturbed.”
175 later decisions quote this exact passage“The forum non conveniens determination is committed to the sound discretion of the trial court. It may be reversed only when there has been a clear abuse of discretion; where the court has considered all relevant public and private interest factors, and where its balancing of these factors is reasonable, its decision deserves substantial deference.”
102 later decisions 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.