How to Respond When Served With a Subpoena: A Step-by-Step Guide for Businesses and Third Parties
Receiving a subpoena is one of the more disorienting moments a business can face — particularly when the company has no involvement in the underlying lawsuit and no warning that it was about to be drawn in. A subpoena is a formal legal command: comply with it properly, or face serious consequences. But the obligation to comply does not mean an obligation to hand over everything that is requested, on whatever timeline the requesting party has set, without any review or negotiation. The law gives recipients meaningful rights, and exercising those rights — promptly and with counsel — is the difference between a controlled compliance process and an expensive, disruptive one.
This guide walks through what to do when your business receives a subpoena, step by step, whether you are a party to the litigation or a third party caught in its orbit.
Step 1 — Read It Carefully, But Do Not Ignore It
The first instinct when a subpoena arrives is often to set it aside until there is time to deal with it. That instinct is wrong. Subpoenas carry deadlines — sometimes as short as seven to fourteen days for document production, and often with fixed dates for depositions or court appearances — and missing them can result in contempt of court, monetary sanctions, or both. The subpoena should be read carefully the day it arrives.
At the same time, receiving a subpoena is not a cause for panic. Many subpoenas served on businesses are routine requests for records in disputes the company has nothing to do with — a former employee's lawsuit against a different employer, a contract dispute between two of the company's customers, a regulatory investigation that happens to touch on a transaction the company was peripherally involved in. The appropriate response is prompt, calm, and methodical.
One rule is absolute from the moment the subpoena is received: do not destroy, alter, delete, or move any documents or data that may be responsive to it. Doing so — even if the deletion was part of a routine document-management process that was already underway — can constitute spoliation of evidence and expose the company to sanctions that are far more serious than the subpoena itself.
Practical tip: Forward the subpoena — including all attachments, the cover letter if any, and the envelope — to counsel the same day it is received. Do not attempt to assess its validity, scope, or implications on your own before that conversation.
Step 2 — Identify the Type of Subpoena and Its Source
Not all subpoenas are the same, and the procedural rules that govern your response depend on what kind of subpoena you have received and who issued it.
Subpoena Duces Tecum
A subpoena duces tecum requires the production of documents, electronically stored information, or tangible things. It will specify categories of records to be produced — contracts, emails, financial records, communications, data from specific systems — and will set a deadline and location for production. This is the most common type of subpoena served on businesses that are not parties to a lawsuit.
Subpoena Ad Testificandum
A subpoena ad testificandum requires a person to appear and testify — either at a deposition or at trial. When served on a business entity, it typically requires the company to designate a representative with knowledge of specified topics to testify on the company's behalf. This type of subpoena carries its own set of preparation requirements and risks, discussed below.
The Source of the Subpoena
The issuing authority matters. A subpoena issued in federal litigation is governed by the Federal Rules of Civil Procedure — principally Rule 45, which sets the rules for third-party subpoenas including geographic limits, cost-shifting, and the grounds for challenging the subpoena. A subpoena issued in New York state court is governed by the CPLR; one issued in New Jersey state court by the New Jersey Court Rules. A subpoena from a government agency — the SEC, the DOJ, a state attorney general — carries different implications and may require a different response strategy entirely. Identifying the source tells your counsel which rules apply and what options are available.
Step 3 — Determine Whether Your Company Is a Party or a Third Party
The distinction between being a party to the litigation and a third party has significant practical consequences for how you respond.
If your company is a party — a plaintiff or defendant — the subpoena is part of the ordinary discovery process, and your counsel will handle it in the context of the broader litigation strategy. The analysis of scope, privilege, and proportionality proceeds within the framework of that case.
If your company is not a party to the litigation, your position is different and in some respects more favorable. Rule 45 of the Federal Rules of Civil Procedure — and its state-court analogs — explicitly recognize that third parties are entitled to protection from undue burden and expense. Courts do not expect non-parties to bear the same compliance costs as parties who chose to litigate. Third parties have the right to object to subpoenas that are overbroad, unduly burdensome, seek irrelevant information, or request disclosure of confidential or privileged materials. They also have the right to seek cost-shifting — requiring the party that issued the subpoena to bear the reasonable costs of compliance.
Practical tip: Being a non-party does not mean being powerless. It means having rights that are worth asserting — and that are more likely to be respected by courts and opposing counsel when raised promptly and professionally.
Step 4 — Preserve All Potentially Responsive Documents and Data
The duty to preserve arises immediately upon receipt of the subpoena. Your company must suspend any routine document deletion policies, halt automated data purges, and take affirmative steps to ensure that all potentially responsive materials are retained. This obligation applies to every format in which responsive information may exist: emails, text messages, Slack and Teams communications, shared drives, cloud storage, accounting systems, databases, and physical records.
Counsel will typically issue a written litigation hold notice to relevant employees and IT personnel, directing them to preserve all materials that may be responsive and to stop any deletion or overwriting of potentially relevant data. The litigation hold should be issued promptly — before any routine deletion cycle has an opportunity to run — and should be monitored to ensure compliance. Spoliation sanctions for failure to preserve are available even when the destruction was inadvertent, if the court finds that the company failed to take reasonable steps to prevent it.
Step 5 — Assess Validity, Scope, and Available Objections
Before producing a single document, counsel should evaluate whether the subpoena is procedurally valid and whether any objections apply. This analysis is not about obstruction — it is about ensuring that the company's legal rights are protected and that compliance, when it occurs, is appropriately scoped.
Procedural Validity
Subpoenas must be properly served, must comply with applicable geographic limitations, and must allow reasonable time for compliance. A subpoena that was not properly served, that demands production from a location outside the court's jurisdiction, or that allows an unreasonably short response period may be subject to challenge on procedural grounds alone.
Privilege
Documents that are protected by the attorney-client privilege, the work-product doctrine, or other applicable privileges are not subject to production — even in response to a valid subpoena. Identifying and withholding privileged documents requires careful review, and any withheld documents must be logged on a privilege log that describes each document in enough detail for the requesting party to assess the privilege claim. Inadvertent production of privileged documents can constitute a waiver of the privilege, making the pre-production review one of the most consequential steps in the process.
Overbreadth, Burden, and Relevance
Subpoenas — particularly those served on non-parties — are frequently drafted broadly. A request for "all documents relating to" a particular transaction or time period may capture enormous volumes of material, most of which has no bearing on the dispute. Counsel can object to requests that are overbroad, seek information that is not relevant to the claims at issue, or impose a burden on the non-party that is disproportionate to the needs of the case. In many situations, a direct conversation with opposing counsel to negotiate a narrowed scope is more efficient than formal motion practice — and courts expect parties to make that effort before filing motions to quash or modify.
Confidentiality and Protective Orders
If responsive documents include trade secrets, proprietary business information, customer data, or other sensitive materials, counsel can seek a protective order limiting the use and dissemination of those materials in the litigation. Protective orders designating materials as "confidential" or "attorneys' eyes only" are standard in commercial litigation and are routinely entered by courts on consent. They do not prevent production — they control what the receiving party can do with the produced materials.
Practical tip: Never produce documents directly to the requesting party — or to the court — without a full privilege review and a determination of whether any confidentiality protections should be sought. Unreviewed production is one of the most common and costly subpoena mistakes.
Step 6 — Manage the Collection and Production Process
Once the scope of the response has been determined — through negotiation, objection, or court order — the actual collection and production of documents must be managed carefully. This involves identifying the custodians whose files are likely to contain responsive materials, collecting documents from all relevant sources in a forensically sound manner, reviewing the collected materials for responsiveness and privilege, and producing responsive non-privileged documents in the format specified by the subpoena or agreed upon with the requesting party.
For subpoenas involving significant volumes of electronically stored information, eDiscovery tools and vendors can substantially reduce the cost and time of review. Keyword searches, technology-assisted review, and deduplication can narrow large datasets to the most likely sources of responsive documents — reducing the volume of material that requires attorney review without sacrificing thoroughness. A privilege log must accompany any production from which documents have been withheld, documenting each withheld document by date, author, recipient, subject matter, and the privilege asserted.
Step 7 — Seek Cost-Shifting If the Burden Is Significant
When a subpoena imposes substantial compliance costs on a non-party — significant attorney time, vendor expenses, employee hours devoted to collection and review — the law provides a mechanism for relief. Rule 45 of the Federal Rules of Civil Procedure requires courts to protect non-parties from significant expense resulting from compliance, and courts have discretion to shift some or all of the reasonable compliance costs to the party that issued the subpoena. State court rules in New York and New Jersey contain analogous protections.
Cost-shifting is not automatic, and it requires counsel to document the actual costs incurred and to raise the issue with the court or with opposing counsel at the appropriate time. But for non-parties facing subpoenas that require substantial document collection, translation, or eDiscovery processing, it is a right worth asserting — and one that is more likely to be granted when raised early and supported with specific cost estimates.
Step 8 — Prepare Thoroughly for Any Required Testimony
If the subpoena requires testimony — whether at a deposition or at trial — preparation is essential. A witness testifying in response to a subpoena is under oath, and the testimony can be used in the litigation for any purpose, including impeachment if the witness later testifies inconsistently. The stakes are real even for a company that is not a party to the dispute.
Deposition questions in third-party subpoenas typically focus on the authenticity and chain of custody of produced documents, the company's business practices and record-keeping procedures, and factual background relevant to the dispute. They do not typically involve allegations of wrongdoing against the testifying company — but they can expand in scope if the witness is unprepared or if prior document production has created ambiguities that counsel wants to explore.
Preparation should include a thorough review of all documents produced in response to the subpoena, a clear understanding of the topics covered by the subpoena, and practice sessions with counsel that address not only the substance of the anticipated questions but the format and pace of deposition testimony. A composed, well-prepared witness who answers questions directly and does not volunteer information beyond what is asked is the goal.
A Note on Government Subpoenas
A subpoena issued by a government agency — the SEC, the DOJ, a state attorney general, or a regulatory body — requires immediate and heightened attention. Government subpoenas carry implications that go beyond civil discovery: they may signal that the agency is investigating the company itself, or that the company possesses information relevant to an investigation of a third party that could expose the company to follow-on scrutiny. The procedural rules governing government subpoenas differ from those applicable to civil subpoenas, and the strategic considerations are meaningfully different.
If your company receives a government subpoena, engage counsel with experience in regulatory and government investigations before taking any steps — including before communicating with the agency about the subpoena's scope or timeline. Early missteps in responding to government subpoenas can have consequences that extend well beyond the subpoena itself.
Good Pine P.C. guides businesses through every stage of subpoena response — from the initial assessment of validity and scope through document collection, privilege review, production, and witness preparation. We represent both parties and non-parties in New York and New Jersey litigation, and we work efficiently to ensure that compliance obligations are met while confidential information is protected and disruption to operations is minimized.
If your business has received a subpoena — or anticipates receiving one — contact Good Pine P.C. promptly. The earlier counsel is involved, the more options are available.
Disclaimer: This article is provided by Good Pine P.C. for general informational and educational purposes only. It does not constitute legal advice, does not create an attorney–client relationship, and should not be relied upon as a substitute for individualized legal counsel. Because every matter depends on specific facts and applicable law, readers should consult qualified counsel licensed in the relevant jurisdiction before taking or refraining from any legal action.
Good Pine P.C. is a U.S. law firm based in New York and New Jersey. Our attorneys advise clients solely on matters governed by U.S. federal and state law. References to subpoena procedure, discovery obligations, or compliance strategy are provided for general understanding only and may vary by jurisdiction.
