An appeal resolves a dispute between the parties, but an appellate court’s decision can also affect people and organizations who were not involved in the case. An amicus curiae brief gives a nonparty an opportunity to present legal arguments or information that may help the court consider an issue. California has specific rules governing who may file an amicus brief, when it may be filed, and what it must contain. The court decides whether to accept the brief and consider its arguments.
What Is an Amicus Curiae Brief?
Amicus curiae is Latin for “friend of the court.” An amicus curiae brief is a written argument submitted by someone who is not a party to an appeal. The filer does not seek relief for themselves. Instead, they offer legal analysis or information that may assist the court in deciding an issue.
The California Supreme Court has explained that amici perform “a valuable role for the judiciary precisely because they are nonparties.” The court has also recognized that amicus briefs can give judges a broader perspective on the issues raised by the parties. (Connerly v. State Personnel Bd. (2006) 37 Cal.4th 1169, 1177.)
A person or organization may seek to participate because an appellate decision can establish a legal rule that affects others in similar situations. Trade groups, property owner associations, and businesses may therefore have an interest in presenting their views, even when they are not directly involved in the case.
An amicus brief is different from the briefs filed by the appellant and respondent. Under California Rules of Court, rule 8.200(a), the parties generally file an opening brief, a respondent’s brief, and, if permitted, a reply brief. Other briefs generally require the presiding justice’s permission. Even an appeal involving cross-appeals involves briefs filed by parties seeking relief from the court. An amicus brief serves a different purpose: it gives a nonparty an opportunity to present arguments that may assist the court. For more on the parties’ roles, see this explanation of appellant and appellee status in California.
Who Can File an Amicus Brief in California?
Under rule 8.200(c) and rule 8.520(f), any person or organization may apply to file an amicus brief. This includes individuals, businesses, associations, nonprofits, and advocacy groups.
However, eligibility does not guarantee acceptance. The applicant must state their interest and explain how the brief will help the court. Relevant experience, such as industry knowledge, may support the application.
Neither rule requires applicants to act independently from the parties. Instead, both rules require applicants to disclose certain connections. The application must identify any party or attorney who helped write or fund the brief.
A person does not become a party simply because the decision may affect them. An amicus cannot control the appeal, raise separate claims, or seek relief for itself.
When Can an Amicus Brief Be Filed?
The filing deadline depends on which court hears the appeal. It also depends on when the parties complete their briefs. For an overview of the appeal process, see this guide on how to file an appeal in California.
Court of Appeal: Rule 8.200(c)
Applicants must file their permission request within 14 days after the last appellant’s reply brief. The deadline also applies when the appellant could have filed that brief under rule 8.212.
The appellant generally has 20 days after the respondent files its brief to file a reply. Extensions may change this schedule and the amicus filing deadline. If no respondent’s brief is filed, the applicant has 34 days after that brief could have been filed. The presiding justice may allow a later filing for good cause.
Applicants must submit their requests to the presiding justice. The rule does not make party consent the deciding factor. A party’s agreement also cannot replace the court’s permission.
The same deadline applies whether the amicus supports the appellant, the respondent, or neither side. The application and brief must identify any party the applicant supports. If the court grants the application, any party may file an answer within the time the court sets.
California Supreme Court: Rule 8.520(f)
An amicus brief at the merits stage comes after the Supreme Court grants review. The Court accepts review in a limited number of cases. For more information, see this overview of petitions for review.
Applicants must submit their requests to the Chief Justice. The deadline falls 30 days after the parties file, or should have filed, their permitted briefs. Supplemental briefs do not count toward this deadline. The Chief Justice may allow a later filing for good cause.
If the Chief Justice grants an application, a party may answer each amicus brief. The party may also file one consolidated answer. The deadline is 30 days after the later of two events: the ruling on the last timely application or the close of the application period.
Applicants can also submit an amicus curiae letter before the Court grants review. Under rule 8.500(g), a person or organization may support or oppose a petition for review through a letter. However, a letter is not a brief. It does not authorize the applicant to file a merits brief under rule 8.520(f).
The Attorney General and Federal Practice
The Attorney General may file an amicus brief without permission. An exception applies when the Attorney General files on behalf of another state officer or agency. The same timing, content, and cover requirements still apply. In the Court of Appeal, a party may answer within 14 days after the Attorney General files the brief.
Federal appellate courts follow different rules. For example, Federal Rule of Appellate Procedure 29 generally allows amici to file with the court’s permission or all parties’ consent. It also ties filing deadlines to the brief of the party the amicus supports. California follows a different process. This article focuses on California state appellate courts.
What Must an Amicus Brief Include?
Rules 8.200(c) and 8.520(f) specify the application and proposed brief requirements. Applicants must address the following points:
- Applicant’s interest: The application must explain the applicant’s interest in the case.
- How the brief will help: The application must explain how the brief will assist the court.
- Authorship and funding disclosures: The application must identify any party or attorney who helped write or fund the brief. It must also identify other people or organizations that contributed money. This excludes the amicus, its members, and its counsel in the appeal.
- Proposed brief: Applicants must serve the proposed brief with their application. They may combine both documents into one filing.
- Cover information: The application and proposed brief must identify any party the applicant supports.
The proposed brief must also follow the general requirements in rule 8.204. It must include a table of contents and a table of authorities. Each legal argument needs a separate heading and supporting authority, where available. Any reference to the appellate record must include a specific citation.
A strong amicus brief should explain the legal issue and state its position clearly. It should also provide analysis that the parties’ briefs do not fully address. This helps the court see why the applicant’s perspective matters.
Length and formatting rules also apply. Under rule 8.204(c), computer-produced briefs generally cannot exceed 14,000 words, including footnotes. The court may allow a longer brief for good cause. This limit also applies to amicus briefs under rules 8.200(c) and 8.520(f).
Applicants should check the current California Rules of Court before filing. They should also review any case-specific orders that affect briefing requirements.
How Can an Amicus Brief Influence an Appeal?
An amicus brief can add legal analysis or practical context that the parties’ briefs do not fully address. It can help the court consider the wider effects of a legal ruling.
An amicus brief may contribute in several ways:
- Further legal analysis: An amicus can examine case law, legislative history, or legal principles that the parties discuss only briefly.
- Industry or professional experience: An amicus can explain how a proposed legal rule may affect a business, profession, or group of property owners.
- Wider policy effects: An amicus can explain how a ruling may affect people outside the case or interact with other areas of law.
For example, a property owner association could explain how a proposed statutory interpretation might affect owners across a region. The parties may focus on their own dispute without addressing those wider effects.
The court does not have to adopt the amicus’s position. Its value depends on whether the brief offers useful analysis or a perspective the parties have not fully addressed.
Can an Amicus Brief Change the Outcome of a Case?
An amicus brief can influence the court’s analysis, but it cannot guarantee a particular result. The court decides whether to accept the brief and consider its arguments. A useful brief addresses the legal issues and supports its arguments with sound authority.
An amicus generally must work within the issues the parties raise. In a 1943 decision, the Court of Appeal stated, “Amicus curiae must accept the issues made and propositions urged by the appealing parties.” The court declined to consider arguments that went beyond those issues. (Eggert v. Pacific States Sav. & Loan Co. (1943) 57 Cal.App.2d 239, 251.)
An amicus brief also cannot add new evidence to the appellate record. The court reviews the record from the trial court proceedings. This article on the California appellate record explains what that record contains.
An amicus may discuss legal principles, policy concerns, and general industry practices. However, it cannot use the brief to introduce new facts about the specific case. The court may disregard arguments that rely on material outside the record.
Common Mistakes When Preparing an Amicus Brief
Applicants can weaken their briefs by making several common mistakes:
- Missing the filing deadline: Applicants should track the applicable deadline and any court-approved extensions.
- Failing to address an issue before the court: An amicus should support its arguments with relevant legal authority and connect them to the issues on appeal.
- Repeating the parties’ arguments: A brief adds little when it offers no analysis beyond what the parties already presented.
- Introducing new evidence: An amicus cannot use its brief to add case-specific facts outside the appellate record.
- Overlooking court-specific requirements: Applicants should check the applicable rules and any orders in the case before filing.
Amicus Briefs Add Perspective, but the Rules Set the Limits
An amicus curiae brief allows a qualifying nonparty to offer legal analysis, practical experience, or policy arguments to an appellate court. However, the author does not become a party or gain the right to add evidence to the record. The court also decides whether to accept the brief and consider its arguments.
Kassouni Law represents private parties in appellate matters. If you are involved in an appeal or have questions about an amicus brief, the firm can review your circumstances and discuss the legal options available.
Call Kassouni Law at (877) 770-7379 or contact the firm to discuss your situation. Submitting a contact form does not create an attorney-client relationship.
Frequently Asked Questions
What does amicus curiae mean in a California appeal?
It is Latin for “friend of the court.” It refers to a nonparty that asks the court’s permission to file a brief offering legal analysis or perspective on an issue in the appeal.
Can anyone file an amicus brief in California?
Any person or entity may apply under rules 8.200(c) and 8.520(f), but the application must state the applicant’s interest and explain how the brief will help the court. The court decides whether to grant it.
Does an amicus curiae brief require court permission?
Usually, yes. In a Court of Appeal, the application goes to the presiding justice. In the Supreme Court, it goes to the Chief Justice. The rules do not make the parties’ consent the test. The Attorney General may file without permission, with an exception for filings on behalf of another state officer or agency.
Can an amicus brief be filed after the parties submit their appellate briefs?
Yes. The timing is built around that sequence. In a Court of Appeal, the application is generally due within 14 days after the last appellant’s reply brief is filed or could have been filed. In the Supreme Court, it is due 30 days after the parties’ merits briefs are filed or due. Later filing requires good cause.
Do California appellate courts have to consider amicus briefs?
Not automatically. The court decides whether to grant the application and how much weight to give the brief. It is not required to adopt an amicus’s arguments, and a Court of Appeal decision has stated that an amicus must accept the issues the parties present.
The information provided here is for general informational purposes only and is not legal advice. Amicus procedures depend on the court, the stage of the appeal, and the rules in effect. Consult a qualified attorney about your circumstances.
