In court, an ex parte in camera proceeding is a private session where a judge reviews information or hears argument from only one side of a case, with the public, the jury, and often the opposing party excluded. The two Latin phrases do separate work: “ex parte” means from one side only, and “in camera” means in chambers, or privately. Combined, they describe the narrow situations where a case needs both secrecy and single-party access at the same time.
Because this procedure sidelines the usual rights to notice and a chance to respond, courts treat it as a deliberate exception to the adversarial system and surround it with strict conditions.
What Ex Parte Means
Ex parte translates to “from one side only.” It describes any proceeding where one party asks the judge for relief without the other party knowing about or participating in the request. Due process normally requires that everyone involved in a lawsuit receive notice and a chance to argue their position, so courts allow ex parte requests only when waiting for the standard process would cause serious, immediate harm.
The most familiar example is an emergency restraining order. Someone facing imminent domestic violence can ask the court for immediate protection without first notifying the alleged abuser, because tipping off that person could trigger the very harm the order is meant to prevent. Under Federal Rule of Civil Procedure 65(b), a court can issue a temporary restraining order without notice only if the applicant’s sworn statements or verified complaint show that “immediate and irreparable injury, loss, or damage will result” before the other side can be heard, and the applicant’s attorney certifies in writing the efforts made to give notice or the specific reasons notice should not be required.1Legal Information Institute. Rule 65 Injunctions and Restraining Orders
Any relief granted ex parte is temporary by design. A federal TRO issued without notice expires no later than 14 days after entry, though a court can extend it once for another 14 days if there is good cause.1Legal Information Institute. Rule 65 Injunctions and Restraining Orders During that window, the court schedules a full hearing where the other side can appear, present evidence, and argue for dissolving or modifying the order. The short fuse exists to prevent one-sided relief from hardening into a permanent outcome.
What In Camera Means
In camera is Latin for “in chambers.” It refers to any proceeding, review, or inspection that happens privately rather than in open court. When a judge conducts an in camera review, the public and the jury are excluded, and sometimes one or both parties are as well. The goal is to protect information that would lose its value or cause harm if disclosed publicly.
A common use is privilege disputes. When one side claims attorney-client privilege or work-product protection over a set of documents and the other side challenges that claim, the judge can review the documents in camera to decide whether the privilege applies without exposing the contents to anyone else. Both parties know the review is happening, but only the judge sees the material. The same approach applies to trade secrets in commercial litigation, where revealing proprietary information in open court would defeat the point of protecting it.
In camera review does not automatically involve an ex parte component. A hearing can be private while still allowing both sides to participate. The two procedures overlap only when a situation demands secrecy and single-party access at the same time.
When Courts Combine Both Procedures
Full ex parte in camera proceedings are uncommon. They cluster in a few recognizable areas.
Emergency Protective Orders
Domestic violence and stalking cases are the most common setting. The petitioner asks the court for immediate protection, presents evidence in a private session (often to shield the petitioner’s location or safety details from becoming public record), and the judge decides whether to grant a temporary order before the respondent is notified. The evidence review happens in camera because publicizing it could endanger the petitioner, and it happens ex parte because alerting the respondent could escalate the threat.
Classified Information in Criminal Cases
Federal criminal prosecutions sometimes involve evidence the government classifies as a national security secret. The Classified Information Procedures Act allows the government to ask the court to review classified material in camera and ex parte. Under CIPA, if the Attorney General certifies that a public proceeding could result in the disclosure of classified information, the hearing on how that evidence will be handled must be conducted privately. The government can also submit an affidavit explaining the national security basis for classification, and if requested, the court must examine that affidavit in camera and ex parte, meaning the defendant and defense counsel never see it.2Legal Information Institute. 18a US Code 6 – Procedure for Cases Involving Classified Information The result is one of the sharpest tensions in American law: a defendant’s right to confront the evidence directly conflicts with the government’s interest in protecting intelligence sources and methods.
Foreign Intelligence Surveillance
The Foreign Intelligence Surveillance Court operates almost entirely on an ex parte in camera basis. When the government seeks a warrant to conduct electronic surveillance for foreign intelligence purposes, the application goes before a FISC judge without the surveillance target’s knowledge or participation. The FISC has formal rules governing in camera review of government submissions under multiple provisions of the Foreign Intelligence Surveillance Act.3United States Foreign Intelligence Surveillance Court. Rules of Procedure
Confidential Informants
When a criminal case depends on a confidential informant, the prosecution may ask the judge to review the informant’s identity and involvement in camera and ex parte. Revealing the source’s identity in open court, or even to defense counsel, could endanger the informant or compromise an ongoing investigation. The judge examines the information privately and decides how much, if anything, must be disclosed to the defense to ensure a fair trial.
The Safeguards Courts Impose
Because the procedure removes the usual check of adversarial testing, courts attach several conditions.
Proving Irreparable Harm
Courts do not grant ex parte relief just because a situation feels urgent. The applicant must demonstrate irreparable harm, meaning injury that cannot be adequately fixed by a later award of money damages. If the court concludes that the harm can eventually be compensated with dollars, there is no justification for acting before the other side has been heard. Recognized examples include threats of physical violence, destruction of evidence, violations of constitutional rights like free speech, and irreversible environmental damage.4Legal Information Institute. Irreparable Harm A business about to lose a trade secret to a competitor may also qualify, because the secret cannot be unlearned once disclosed.
Sworn, Specific Applications
The request must include sworn affidavits or verified declarations laying out the facts in detail. Vague assertions of urgency are not enough. The applicant must explain what specific harm is imminent, why standard notice would be inadequate or dangerous, and why the information must be reviewed privately. Under federal rules, the attorney must also certify what efforts were made to notify the opposing party, or explain precisely why notice was not attempted.1Legal Information Institute. Rule 65 Injunctions and Restraining Orders
A Heightened Duty of Candor
Lawyers’ ethical obligations change in ex parte proceedings. Normally each side’s lawyer advocates aggressively while the opposing lawyer does the same, and the truth emerges from the clash. With no opposing lawyer in the room, that mechanism disappears. ABA Model Rule 3.3(d) fills the gap by requiring that in an ex parte proceeding, a lawyer must inform the court of all material facts known to the lawyer that would enable the judge to make an informed decision, including facts that hurt the lawyer’s own client.5American Bar Association. Rule 3.3 Candor Toward the Tribunal In every other type of proceeding, a lawyer has no duty to volunteer adverse facts. In an ex parte hearing, that duty is absolute.
A Sealed Record for Later Review
Courts typically create a sealed record or transcript of the ex parte in camera submission and the judge’s reasoning. The sealed record lets an appellate court later review what the judge saw, what arguments were made, and whether the decision was legally justified, all without exposing the confidential information to the public. Without that record, the process would be unreviewable, which no court treats as acceptable.
If You Are the Excluded Party
Learning that a judge has already signed an order against you based on evidence you never saw is disorienting. The process does not end at the ex parte stage, and the follow-up options matter.
The Built-In Follow-Up Hearing
Every ex parte TRO issued under federal rules comes with an expiration. The order automatically dissolves no later than 14 days after entry unless the court extends it for good cause or the restrained party consents to a longer timeline.1Legal Information Institute. Rule 65 Injunctions and Restraining Orders Before it expires, the court must schedule a hearing where you appear, present evidence, cross-examine witnesses, and argue that the order should be dissolved or modified. This is where the adversarial process catches up.
Filing to Dissolve or Modify Earlier
You do not have to wait for the scheduled hearing. In most jurisdictions, you can file a motion to dissolve or modify the ex parte order as soon as you receive it. The motion should explain why the order was wrongly granted: perhaps the applicant exaggerated the urgency, omitted key facts, or failed to meet the irreparable harm standard. Some courts set the hearing on your motion within days.
Challenging the Sealed Record
If in camera submissions were part of the proceeding, your access to that evidence may be limited even at the follow-up hearing. You can ask the court to unseal portions of the record that do not involve genuinely privileged or classified material. If the court refuses, the sealed portions remain available for appellate review, where an appeals court can independently evaluate whether the trial judge’s secrecy determination was correct. In classified information cases, the appellate court reviews the sealed materials under the same security protocols as the trial court.