If you've received a subpoena — or heard the term in a courtroom drama — you might wonder what it actually means and what legal power it carries. A subpoena is one of the most common legal tools used in both civil and criminal cases, and understanding how it works is essential for anyone involved in the legal system.
What Does "Subpoena" Mean?
A subpoena (pronounced "suh-PEE-nuh") is a legal document that commands a person to appear in court, give testimony, or produce documents and records. The word comes from the Latin phrase sub poena, meaning "under penalty" — because failing to comply can result in serious legal consequences, including contempt of court.
Unlike a simple request or invitation, a subpoena carries the full force of law. Once properly served, the recipient has a legal obligation to comply.
Types of Subpoenas
There are two primary types of subpoenas used in American courts:
Subpoena Ad Testificandum
A subpoena ad testificandum compels a person to appear and give testimony — either at trial, a deposition, or a hearing. This is the most common type. The witness must appear at the specified time and place and answer questions under oath.
Example: A plaintiff's attorney issues a subpoena requiring a neighbor who witnessed a car accident to appear at trial and describe what they saw.
Subpoena Duces Tecum
A subpoena duces tecum (Latin for "bring with you") requires a person or organization to produce specific documents, records, or tangible evidence. The recipient must deliver the requested materials by the deadline specified.
Example: An attorney issues a subpoena duces tecum to a hospital, requiring them to produce a patient's medical records relevant to a personal injury case.
Third Type: Deposition Subpoena
Some jurisdictions recognize a third category — the deposition subpoena — which combines elements of both. It requires a person to appear at a deposition (an out-of-court proceeding) and may also require them to bring documents.
Who Can Issue a Subpoena?
Subpoenas can be issued by:
- Courts — Judges can issue subpoenas directly
- Attorneys — Licensed attorneys can typically issue subpoenas on behalf of parties in a case (rules vary by jurisdiction)
- Government agencies — Regulatory bodies and legislative committees can issue administrative subpoenas during investigations
- Grand juries — Grand juries issue subpoenas during criminal investigations
In federal court, subpoenas are governed by .
How the Subpoena Process Works
Step 1: Issuance
An attorney or court clerk prepares the subpoena document, which must include:
- The name of the court
- The case name and number
- The name of the person being subpoenaed
- What is required (testimony, documents, or both)
- The date, time, and location for compliance
- Information about fees and mileage (for witnesses)
Step 2: Service
The subpoena must be properly served on the recipient. Service rules vary by jurisdiction but generally require:
- Personal delivery (hand-delivered to the individual)
- Proof of service filed with the court
- Reasonable advance notice (typically at least 7-14 days before the required appearance)
A subpoena that isn't properly served may be unenforceable.
Step 3: Compliance or Challenge
Once served, the recipient must either:
- Comply — Appear or produce the requested materials
- File a motion to quash — Ask the court to cancel or modify the subpoena
- Negotiate — Work with the issuing attorney to narrow the scope or adjust timing
Step 4: Enforcement
If the recipient fails to comply without a valid legal excuse, the issuing party can ask the court to hold them in contempt of court, which may result in fines or even jail time.
What Happens If You Ignore a Subpoena?
Ignoring a subpoena is never advisable. Potential consequences include:
- Contempt of court — A judge can find you in contempt, resulting in fines (often $500-$10,000+) or incarceration
- Bench warrant — The court may issue a warrant for your arrest
- Default judgment — In civil cases, your failure to produce evidence may result in adverse inferences against you
- Professional consequences — For regulated professionals (doctors, accountants), non-compliance can trigger licensing board investigations
How to Respond to a Subpoena
If you receive a subpoena, follow these steps:
- Read it carefully — Note the date, time, location, and what's being requested
- Don't ignore it — Even if you believe it's invalid, you must respond through proper legal channels
- Consult an attorney — Especially if you're asked to produce documents that may be privileged or confidential
- Consider filing a motion to quash — If the subpoena is overly broad, unduly burdensome, or seeks privileged information, you can ask the court to modify or cancel it
- Comply by the deadline — If there's no valid basis to challenge it, produce the documents or appear as directed
Grounds for Quashing a Subpoena
A court may quash or modify a subpoena if:
- It requires travel of more than 100 miles (in federal court)
- It demands privileged or protected information (attorney-client privilege, doctor-patient privilege, trade secrets)
- It imposes an undue burden on the recipient
- It was not properly served
- It seeks irrelevant information
- The issuing party failed to provide reasonable compensation for production costs
Subpoena vs. Summons: What's the Difference?
People often confuse subpoenas with summons. Here's the distinction:
| Subpoena | Summons | |
|---|---|---|
| Purpose | Compels testimony or document production | Notifies a party they're being sued |
| Who receives it | Witnesses, records custodians, third parties | Defendants in a lawsuit |
| When issued | During litigation (discovery or trial) | At the start of a lawsuit |
| Issued by | Attorneys, courts, agencies | Courts only |
| Consequence of ignoring | Contempt of court | Default judgment against you |
Subpoenas in Criminal vs. Civil Cases
Criminal Cases
In criminal proceedings, both the prosecution and defense can subpoena witnesses. The Sixth Amendment guarantees defendants the right to compulsory process — meaning they can force witnesses to testify on their behalf. Prosecutors routinely subpoena witnesses, victims, and records custodians to build their case.
Civil Cases
In civil litigation, subpoenas are primarily used during the discovery phase to obtain evidence from third parties who aren't directly involved in the lawsuit. They're also used at trial to ensure witnesses appear.
Practice Subpoena Scenarios
Understanding subpoenas isn't just academic — it's a skill that matters in courtroom practice. If you're a law student, mock trial competitor, or legal professional looking to sharpen your litigation skills, practicing with realistic courtroom scenarios helps you understand how subpoenas fit into the broader trial process.
Mock Trial Online's AI-powered courtroom simulation lets you practice the entire trial process — from pretrial motions through verdict — giving you hands-on experience with the procedural tools that real attorneys use every day.
Key Takeaways
- A subpoena is a legally binding court order — not a request
- The two main types are ad testificandum (testimony) and duces tecum (documents)
- Anyone properly served must comply or challenge through legal channels
- Ignoring a subpoena can result in contempt of court, fines, or arrest
- You have the right to challenge a subpoena by filing a motion to quash
- Subpoenas are distinct from summons, warrants, and court orders
Frequently Asked Questions
Can I refuse a subpoena?
You cannot simply refuse to comply. However, you can file a motion to quash if you have valid legal grounds (privilege, undue burden, improper service, etc.). Until a court rules on your motion, the subpoena remains in effect.
Do I need a lawyer if I receive a subpoena?
While not legally required, consulting an attorney is strongly recommended — especially if the subpoena requests documents that may be privileged, involves a criminal investigation, or could expose you to legal liability.
How far in advance must a subpoena be served?
Rules vary by jurisdiction. Federal courts require "reasonable notice," which is generally interpreted as at least 7-14 days. Many state courts have specific minimum notice periods written into their rules.
Can a subpoena be served by mail?
In some jurisdictions and for some types of subpoenas (particularly subpoenas duces tecum to organizations), service by mail is permitted. However, personal service remains the standard in most contexts. Check your local rules.
What's the difference between a subpoena and a court order?
A subpoena is a specific type of court directive aimed at witnesses or third parties. A court order is a broader term for any directive issued by a judge, which can apply to parties, attorneys, or anyone within the court's jurisdiction.