A subpoena is a legal command requiring someone to testify, produce documents, or both. In plain language, it is a formal demand backed by legal authority rather than a casual request for information.
Why It Matters
The term matters because many important records and witnesses are controlled by nonparties or reluctant parties. A subpoena helps force disclosure or attendance when voluntary cooperation is not enough.
Where It Appears
The term appears in discovery, trial preparation, criminal investigations, administrative proceedings, depositions, and disputes over confidential or burdensome requests.
Practical Example
A party believes a phone company has records proving where someone was on a key date. The party may use a subpoena to require production of the relevant records.
How It Differs From Nearby Terms
- Discovery is the broader process of obtaining information.
- Deposition is a specific procedure that may itself be compelled by subpoena.
- Summons commands a defendant to respond to a lawsuit, not a witness or record holder to provide evidence.
Related Terms
Knowledge Check
- Is a subpoena just an informal request for cooperation? No. It is a formal legal command.
- Can a subpoena require documents as well as testimony? Yes. It can require testimony, document production, or both.