10/09/2026
Amicus curiae is Latin for “friend of the court.” It refers to a person, lawyer, organization, or government agency that is not a party to a case but is allowed—or asked by the court—to provide information, expertise, or a legal position that may help the court decide the issues.
An amicus curiae does not represent the plaintiff or the defendant. Its role is to assist the court in understanding an important or specialized issue.
Under the Code of Professional Responsibility and Accountability (2023), a lawyer must not decline without just cause a request from a court, tribunal, or government agency to act as amicus curiae in a matter relating to the lawyer’s expertise or specialization.
However, appearing as amicus curiae is generally not a matter of right. The court may allow or refuse the appearance, depending on whether the proposed assistance is timely, useful, and impartial. The court may reject a person whose participation appears partisan or whose views merely favor one party, as explained in Forest Hills Golf and Country Club, Inc. v. Gardpro, Inc. (2014).
Example: Suppose a court is deciding whether a building collapsed because of defective construction or because of an earthquake. The parties present their own lawyers and experts. The court may ask an association of architects or engineers to submit an independent technical opinion explaining proper building design and construction standards. That association may participate as amicus curiae, not to win the case for either side, but to help the court understand the technical issues. This occurred in Nakpil & Sons v. Court of Appeals (1986).
In simple terms: the parties argue their cases; the amicus curiae gives the court additional, supposedly neutral assistance in deciding the case.