Geier v. American Honda Motor Co.’s Empirical Analysis
2000
Citation profile
385 federal appellate · 166 district · 356 state decisions
How this case has been cited
Cited by 1,512 later decisions (43 by the Supreme Court) — most recently December 2025 · most notably Wyeth v. Levine (2009), Buckman Company V.' Legal Committee (2001)
385 federal appellate · 166 district · 356 state decisions — followed in 33 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
reviewedthe decision below (from District of Columbia Circuit Court of Appeals)
Relationships
Applies 15 U.S.C. § 1381 (Sherman Antitrust Act) · 15 U.S.C. § 1391 (Sherman Antitrust Act) · 49 U.S.C. § 30101 (National Highway Traffic Safety Administration Authorization Act of 1991) · 49 U.S.C. § 30103 · 49 U.S.C. § 30127 · 5 U.S.C. § 551 (Administrative Procedure Act of 1946) · 5 U.S.C. § 553 (Administrative Procedure Act of 1946)
Relies on Motor Vehicle Manufacturers Association of United States Inc v. State Farm Mutual Automobile Insurance Company Consumer Alert · Coleman v. Thompson · Hines v. Davidowitz · Rice v. Santa Fe Elevator Corp. · Auer v. Robbins
Cited together with Medtronic, Inc. v. Lohr · Cipollone v. Liggett Group, Inc. · Hines v. Davidowitz · English v. General Electric Co. · Rice v. Santa Fe Elevator Corp.
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 1,512 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
“Conflict preemption exists where state law actually conflicts with federal law, making it impossible to comply with both, or where the state law `stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress.'”
17 later decisions quote this exact passage · from the concurrence“stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress.”
17 later decisions quote this exact passage · from the concurrence“deliberately provided the manufacturer with a range of choices among different passive restraint devices.”
13 later decisions quote this exact passage · from the concurrence
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.