Subpoenas: What Do They Mean

March 11, 2026

A subpoena is a serious legal document that can require you to appear in court or produce important records during a legal proceeding, civil litigation, or criminal investigation. It is a court-ordered demand backed by subpoena power under federal law or state law. If you receive a subpoena, you must act carefully and quickly.

Perlman Defense helps you understand your rights, review the case docket number and court date, and respond properly with our experienced federal criminal defense lawyer before legal action escalates.

What Is a Subpoena?

A subpoena is a formal court order that requires a person or business to take specific action in a legal dispute.

It may require testimony at court hearings, a deposition subpoena appearance, or production of court documents and responsive documents. It is issued under the federal rules of criminal procedure or the federal rules of civil procedure, depending on the type of case.

Who Can Issue a Subpoena?

Subpoenas may be issued by courts, including United States District Courts, through the clerk of the court or court clerks. A grand jury may issue a criminal subpoena during a criminal investigation. Attorneys involved in an active civil case or criminal case may also issue a judicial subpoena using proper service of process by a process server.

Types of Subpoenas

There are different types of subpoenas depending on what is required. Some demand testimony, while others demand documents or physical evidence for forensic purpose review. Understanding the type of subpoena you received is critical before responding.

Subpoena Ad Testificandum

A subpoena ad testificandum requires a person to testify as a witness. It may require appearance at trial, a deposition, or other court hearings. This type of witness subpoena is often called a witness summons and may include the defendant's name, witness's name, and case number.

Subpoena Duces Tecum

A subpoena duces tecum, from the Latin term "duces tecum," requires production of documents or tangible items. It may demand electronic documents, computer files, financial records, laboratory reports, medical reports, DNA samples, or other court documents.

Businesses such as savings and loans associations, credit unions, credit card issuers, business owners, notaries public, or a custodian of records may receive this type of legal document.

Grand Jury Subpoena

A grand jury subpoena is issued during a criminal investigation by a grand jury under Federal Rule of Criminal Procedure 17. It is often connected to a prosecutor's office or law enforcement agency investigation.

A federal agency may use this subpoena power when reviewing evidence statements, financial records, or records from the registrar's office or office of legal affairs.

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What Happens If You Receive a Subpoena?

Receiving a subpoena does not always mean you are accused of wrongdoing, but it does mean the matter is serious. It may relate to a civil case, criminal subpoena, congressional subpoena, administrative summons, or even a congressional inquiry. You must respond properly and on time.

Read It Carefully

Review the subpoena carefully and check the case docket number, court date, and issuing authority such as a justice of the peace or clerk of the court. Confirm whether it is part of civil litigation or a criminal investigation.

Determine Whether You Are a Witness, Subject, or Target

You must determine whether you are only a witness or if you may face legal questions about criminal liability. In federal cases, a grand jury subpoena may indicate a deeper investigation.

Do Not Ignore It

Ignoring a subpoena can lead to contempt of court and serious consequences. A court may issue civil penalties, court costs, or even a default judgment in some cases.

Can You Challenge a Subpoena?

In certain situations, a subpoena may be challenged if it is improper or unfair. You should speak with legal counsel before taking any action. A federal criminal defense attorney can evaluate whether the subpoena is valid.

Motion to Quash

A motion to quash asks the court to cancel or limit the subpoena. This may apply if the request is overly broad, seeks irrelevant information, or creates an undue burden. Courts will not allow a fishing expedition that demands unrelated records.

Privilege Protections

Certain privileges may protect information from disclosure, including attorney–client privilege and the Fifth Amendment right against self-incrimination. Doctor-patient privilege and protections under the Right to Financial Privacy Act of 1978 may also apply. In rare cases, diplomatic immunity may limit compliance.

Subpoenas in Federal Criminal Cases

Subpoenas are common in federal criminal cases handled in United States District Courts. They are often issued during the discovery process or evidence gathering phase of a criminal investigation. Responding correctly is critical to avoid further legal action.

Grand Jury Subpoenas

Grand jury subpoenas are used during investigations under Federal Rule of Criminal Procedure 17. They may request electronic documents, financial records, or communications for forensic purpose review.

Risk of Self-Incrimination

Testifying without legal counsel may risk self-incrimination under the Fifth Amendment. Statements made in response to a subpoena can be used in court.

Obstruction of Justice Risks

Destroying records in response to a subpoena may lead to charges under 18 U.S.C. § 1519. Witness tampering under 18 U.S.C. § 1512 can also result in additional criminal penalties.

What Happens If You Ignore a Subpoena?

Ignoring a subpoena can create serious problems in both civil and criminal cases. Courts treat a subpoena as a direct court order.

Contempt of Court

Failure to comply may result in contempt of court. Judges may issue sanctions or additional legal action. A finding of contempt can harm your credibility in the legal proceeding and make the situation more serious. It may also lead the court to take stronger enforcement steps to ensure compliance with the court order.

Fines or Jail

A court may impose fines or even jail time for failure to comply. Civil penalties and court costs may also be added. In some cases, the court can order immediate compliance and impose daily fines until the subpoena is satisfied. Jail time is more likely if the court believes the refusal was intentional.

Additional Criminal Charges in Federal Cases

In federal criminal cases, ignoring a subpoena may lead to additional criminal charges. This can increase exposure under federal law. Prosecutors may argue that the failure to respond shows intent to obstruct the investigation. That can significantly increase the risks you face in a federal criminal case.

Facing federal criminal charges?
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Why You Should Speak With a Lawyer Immediately

Speaking with a lawyer immediately can protect your rights and limit risks. An experienced federal criminal defense lawyer understands subpoena power and how to respond properly. Legal guidance can prevent serious mistakes.

Protecting Your Constitutional Rights

A federal criminal defense lawyer ensures your constitutional rights are respected during the discovery process and legal proceeding. This includes Fifth Amendment protections. Your attorney also reviews whether the subpoena violates other rights under federal law. Protecting these rights early can prevent serious damage to your defense later.

Evaluating Risks of Testimony

Legal counsel can assess whether answering questions could increase your exposure to criminal liability. A federal criminal defense attorney will review the facts and determine if your testimony could be used against you in court. Careful planning helps reduce the risk of unexpected legal consequences.

Limiting Scope of Document Production

An attorney may negotiate limits on the production of responsive documents and electronic documents. This can prevent the release of private or irrelevant information. Limiting the scope also reduces the chance of turning over materials that go beyond what the court order requires.

Avoiding Self-Incrimination

A federal criminal defense attorney can advise whether to assert the Fifth Amendment and how to respond safely. This guidance is especially important during a criminal investigation or grand jury matter. Taking the right steps early can protect you from making statements that harm your case.

Frequently Asked Questions About Subpoena

Is a subpoena the same as a summons and complaint?

No. A summons and complaint starts a civil case, while a subpoena demands testimony or documents.

Can a federal agency issue a subpoena?

Yes. A federal agency may issue an administrative summons during an investigation.

What if I run a middle market business and receive a subpoena?

You should contact legal counsel immediately to protect your interests.

Can a subpoena relate to environmental law or a pollution incident?

Yes. Subpoenas may request records tied to environmental law matters.

Who handles subpoenas for government offices?

Offices such as the office of the general counsel or employee benefits security administration may respond on behalf of an agency.

Get the help you deserve for your federal criminal case.
call for confidential consultation

Contact Our Experienced Federal Criminal Defense Lawyer for a Free Consultation

If you have received a subpoena, whether in a civil case, criminal investigation, congressional inquiry, or federal criminal case, you need immediate guidance from an experienced federal criminal defense lawyer.

Perlman Defense reviews the legal document carefully, checks compliance with federal rules of civil procedure and federal rules of criminal procedure, and protects your rights during court hearings. Our federal criminal defense attorney works with clients, business owners, and professionals to respond properly and avoid contempt of court or additional legal action.

We help limit exposure, protect financial records, and defend against criminal liability. Contact us today for a confidential consultation and strong legal support.

Daniel Perlman
CRIMINAL DEFENSE ATTORNEY

Daniel R. Perlman, the founding attorney at Perlman Defense Federal Criminal Lawyers, leverages his extensive background as a former prosecutor to provide superior defense strategies for clients across federal courtrooms. Earning his Juris Doctor from the Catholic University of America's Columbus School of Law, he first honed his legal skills with the Maryland State’s Attorney’s Office. 

This diverse experience enables him to advocate effectively, understanding prosecution tactics intimately, which he expertly counters in defense of his clients. With a profound commitment to justice, Daniel leads his team in tackling complex federal cases, from white-collar crimes to violent offenses, ensuring the highest level of defense through every phase of the criminal process.

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