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Glossary

Amicus brief

An amicus brief is a filing by a non-party, often called a friend of the court, offering extra legal or practical context.

Definition

An amicus brief is a filing by a non-party, often called a friend of the court, offering extra legal or practical context.

Why it matters

Amicus briefs can show how a ruling may affect governments, industries, scholars, advocacy groups, or other stakeholders.

Common confusion

Amici do not become parties to the case. Their filings support or oppose positions, but the parties still control the dispute.

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