Skip to main content

Drug warnings and lawsuits

Merck Sharp & Dohme v. Albrecht

Updated Oct 18, 2026

In brief

The Court defined what counts as “clear evidence,” wiped out the appeals court’s ruling, and sent the case back without deciding whether Merck’s defense succeeds.

Where it stands
Decided

Decided 9-0 · May 20, 2019 · Opinion by Justice Breyer

What it’s about
Fosamax users sued Merck over its warning label; Merck said FDA action barred their claims.
Who it affects
The appeals court must use the Court’s “clear evidence” standard to assess Merck’s argument that federal FDA action blocked the users’ claims; whether that argument succeeds remains unresolved.

Summary: written with AI from the case record.

Illustration for Merck Sharp & Dohme Corp. v. Albrecht
Conceptual illustration · AI-generated

What it's about

The Court defined “clear evidence” as Merck fully informing the FDA why state law required the warning and the FDA telling Merck it would not approve it; it wiped out the appeals ruling (vacated it) and sent the case back (remanded), leaving the preemption issue unresolved.

The dispute centered on whether the FDA’s rejection of a proposed Fosamax warning showed the agency would not approve the warning state law allegedly required.

Question presented

Whether the FDA’s rejection of a proposed warning constitutes clear evidence that it would not have approved a change to the drug’s label, preempting state-law failure-to-warn claims?

What the Court decided

Holding

1. “Clear evidence” is evidence that shows the court that the drug manufacturer fully informed the FDA of the justifications for the warning required by state law and that the FDA, in turn, informed the drug manufacturer that the FDA would not approve a change to the drug’s label to include that warning. 852 F. 3d 268, vacated and remanded.

Result
Vacated

The Court's reasoning

The Court said “clear evidence” requires proof that Merck fully explained to the FDA why state law required the warning and that the FDA then told Merck it would not approve adding it to the label. It did not decide whether Merck met that standard.

The vote

  • Joined the judgment
  • Concurred in a separate opinion
  • Wrote an opinion
Majority · 6joined the Court's opinion
  1. Breyerwrote the opinion
  2. Kagan
  3. Thomasalso wrote separately
  4. Ginsburg
  5. Sotomayor
  6. Gorsuch
Concurring · 3agreed with the result, wrote separately
  1. Kavanaugh
  2. Roberts
  3. Alitowrote separately
9 justices joined the judgment (3 writing separately).

What's next

The case goes back to the Third Circuit for further proceedings under the Court’s standard. Whether Merck can use FDA action to defeat the users’ claims remains unresolved.

Documents

3

Docket activity

8
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • AI analysis generated: Decision Record

    Oct 18, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 18, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 18, 2026 · Court records

Show 3 more
  • Opinion added: Albrecht

    May 20, 2019 · Court records

  • Opinion added: opinion

    May 20, 2019 · Court records

  • Brief added: Questions Presented

    Court records

More questions

1
Why did Justice Alito agree only with the result?
He agreed that courts should decide whether federal law allowed Merck to add the warning, but worried the Court’s discussion could mislead the lower court.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Oct 18, 2026Methodology

Court records and filings

Reporting and analysis