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Foreign parties in federal court

FS Medical Supplies v. Tanner Pharma UK

Updated Nov 12, 2026

In brief

Where it stands
Petition Pending

Awaiting an order on the petition

No decision timeline until the Court agrees to hear the case.

What it’s about
FS Medical Supplies, LLC asks whether federal courts can hear its suit against Tanner Pharma UK Limited and others based on the parties’ citizenship (diversity jurisdiction), even though the LLC and defendants include both state and foreign citizens.
What's at stake
The unresolved question is whether FS Medical Supplies’ suit against Tanner Pharma UK and the other defendants can be heard in federal court on diversity grounds.

Summary: written with AI from the case record.

What it's about

The petition is pending and was placed on a conference calendar; that does not mean the Supreme Court has agreed to hear the case.

Diversity jurisdiction lets federal courts hear certain cases based on the parties’ citizenship.

Question presented

Whether 28 U.S.C. § 1332(a)(3) confers diversity jurisdiction over a civil action in which the sole plaintiff is an LLC with both state and foreign citizenship, the defendants include both state and foreign citizens, and the state citizenships on opposite sides are completely diverse.

What happens next

The petition was distributed for the Court’s Oct. 16, 2026 conference, where the justices will consider whether to hear it. The conference listing does not guarantee an order date, and no oral argument is scheduled.

Documents

1

Docket activity

14
  • New analysis added

    Nov 12, 2026 · Court records

  • AI analysis generated: Case Briefing

    Nov 12, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Nov 12, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Nov 12, 2026 · Court records

  • New document added

    Oct 20, 2026 · supremecourt.gov

Show 7 more
  • Case data updated: documents, description, document_url, proceeding_type

    Oct 16, 2026 · supremecourt.gov

  • Case data updated: documents, description, proceeding_type

    Oct 6, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Oct 6, 2026 · supremecourt.gov

  • Case data updated: documents, description, proceeding_type

    Sep 30, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Sep 24, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Sep 21, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Sep 21, 2026 · supremecourt.gov

Older entries are on the full docket.

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 Nov 12, 2026Methodology

Court records and filings

Reporting and analysis