Learn About Requesting Subpoenas in Court Cases

Understanding What a Subpoena Actually Is and Why It Matters in Court

A subpoena is a court order that tells someone they must do one of two things: show up in court on a specific date and time, or provide documents and evidence to the court. The word itself comes from Latin and means "under penalty"—which hints at why people take them seriously. If you ignore a subpoena, you can face legal consequences including fines or even jail time for contempt of court.

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There are two main types of subpoenas you'll encounter in civil and criminal cases. A subpoena ad testificandum requires a person to appear in court and testify under oath. A subpoena duces tecum requires someone to bring specific documents, records, or physical evidence to court. In some cases, you might request both—asking someone to appear AND bring documents with them.

Understanding the difference matters because the process for requesting each type has slightly different requirements. When you request a subpoena ad testificandum, you're essentially saying "I need this person's testimony to prove my case." When you request a subpoena duces tecum, you're saying "I need specific materials that this person has access to." Medical records, business documents, text messages, photographs, and financial statements are all things that might be subpoenaed.

The power to subpoena is one of the most practical tools available in litigation. According to the Federal Rules of Civil Procedure, subpoenas can reach witnesses who live anywhere in the country. This means if someone has important information or documents that matter to your case, you have a legal mechanism to compel them to participate, regardless of whether they want to cooperate voluntarily.

Takeaway: Know that a subpoena is a court order with real legal weight. Distinguishing between the two types helps you request exactly what you need—testimony, documents, or both—and prevents wasted time asking for the wrong thing.

Who Has the Power to Request a Subpoena and When

Not everyone can request a subpoena whenever they want. Generally, any party involved in a lawsuit—the plaintiff, defendant, or their attorneys—can request subpoenas. In criminal cases, both the prosecution and the defense can issue subpoenas. The timing matters significantly though. You can't request subpoenas before a case is officially filed, and there are rules about how long before trial you should submit them.

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In federal civil cases, you can issue a subpoena as soon as a case is filed, even before you've completed initial discovery. This is outlined in Federal Rule of Civil Procedure 45. However, most attorneys wait until they understand the case better before issuing subpoenas, because requesting too many unnecessary subpoenas can draw criticism from the judge or the other side for being wasteful or harassing.

If you're representing yourself without an attorney (called "pro se" representation), you still have the right to request subpoenas, but you need to follow the exact same procedures as lawyers do. Many self-represented people don't realize this. You fill out the same court forms, pay the same fees, and the subpoena carries the same legal weight. However, courts sometimes scrutinize subpoena requests from self-represented parties more carefully to make sure they're not being used improperly to harass or annoy the other side.

The timing of your subpoena request affects its success. Requesting a subpoena too close to trial may give the person being subpoenaed too little time to comply. Courts generally want at least 14 days' notice before a trial or hearing where testimony is expected. For document production, you might need to provide even more advance notice depending on how difficult the documents are to locate. A bank might need more time to gather five years of account statements than a business needs to provide email chains from the past month.

In criminal cases, timing is even more regulated. Prosecutors typically subpoena witnesses during the investigation phase, before charges are filed. Defense attorneys often wait until closer to trial when they know what evidence the prosecution has. Both sides must follow strict notice requirements, and failure to do so can result in the subpoena being ruled invalid.

Takeaway: You can request subpoenas if you're a party to the case or their attorney, but timing is critical. Give adequate notice—generally at least 14 days—and understand that requests too close to trial or hearing dates may be challenged or denied.

The Step-by-Step Process for Actually Requesting a Subpoena

The mechanics of requesting a subpoena vary slightly depending on whether you're in federal or state court, and whether it's a civil or criminal case. However, the basic framework is consistent: you prepare a document, file it with the court, and have it served on the person being subpoenaed. Understanding each step prevents costly mistakes that could delay your case or result in an invalid subpoena.

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Start by preparing the subpoena form itself. In federal court, this is governed by Federal Rule of Civil Procedure 45 for civil cases and Federal Rule of Criminal Procedure 17 for criminal cases. Most courts now have their own specific forms available on their websites. State courts have similar forms, though they vary by jurisdiction. Your first stop should be your specific court's website to find the official form—using the wrong form can result in rejection by the clerk's office.

The subpoena document must contain specific information: the name and address of the person being subpoenaed, the date and location where they must appear (or when documents must be produced), the name of the court and case number, the names of the parties, and specific instructions about what documents to bring if it's a duces tecum subpoena. If you're asking for documents, you need to be very specific. "All business records" is too vague. "All emails sent between January 1, 2022 and December 31, 2023 between the account holders smith@company.com and jones@company.com" is specific enough to work.

Next, you sign the subpoena. Here's where it gets interesting—in federal court, you don't need a judge to sign it. You sign it yourself as the requesting party or attorney. This is different from many court orders, which require a judge's signature. The subpoena gains its authority from the court system itself, not from individual judicial approval. In state court, rules vary. Some state courts allow you to self-issue subpoenas; others require a judge or court clerk to sign them.

After preparing the document, you file it with the court clerk's office. Even though you're issuing it, a copy goes into the court record. Some courts charge a small filing fee for subpoenas; others don't. The clerk's office can tell you the fee and whether they want the original or copies.

Service comes next—you must deliver the subpoena to the person being subpoenaed. You can't just mail it and hope they get it. Service must be done properly, usually by a process server, sheriff's deputy, or attorney. The person serving the subpoena must be at least 18 years old and not a party to the case. They need to hand it directly to the person, or leave it at their usual workplace or residence if they can't find them home. Some jurisdictions allow service by mail if the person agrees, but this is not the standard.

Finally, the person who served the subpoena must file proof of service with the court. This is typically a sworn statement (affidavit) saying when, where, and how the person was served. This proves to the court that notice was properly given, which is essential for the subpoena to be enforceable.

Takeaway: Request a subpoena by (1) getting the correct form from your court, (2) filling it out with specific information about who, when, and what, (3) signing it yourself in federal court or having a judge sign it in some state courts, (4) filing it with the clerk, (5) having it properly served on the person, and (6) filing proof of service back with the court.

Identifying the Right Witnesses and Documents to Subpoena

One of the biggest mistakes people make with subpoenas is requesting them for the wrong people or asking for documents that won't actually help their case. Strategy matters here. Every subpoena you issue signals to the other side what information you think is important. Issuing too many subpoenas can make you look unfocused or desperate, while issuing too few might mean you miss critical evidence.

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