Pennsylvania subpoenas: tell every party first — and not the person you are subpoenaing

Pennsylvania procedure · Last verified August 17, 2026

Pennsylvania runs discovery subpoenas through a notice-and-objection sequence before anything is served, and one line in that sequence surprises almost everyone reading it for the first time.

Twenty days' notice to the parties — and silence to the witness

Rule 4009.21(a) and (b):

(a) A party seeking production from a person not a party to the action shall give written notice to every other party of the intent to serve a subpoena at least twenty days before the date of service. A copy of the subpoena proposed to be served shall be attached to the notice. (b) The written notice shall not be given to the person named in the subpoena.

Twenty days, to every other party, with the proposed subpoena attached.

And not to the witness. Subsection (b) is a prohibition, not an omission. The person whose records are sought learns of the subpoena when it is served, not when it is proposed.

The reason is structural: the twenty days exist so the parties can object, and the objection regime that follows works only if the subpoena has not yet gone out.

An objection before service stops the subpoena entirely

Rule 4009.21(c) and (d):

(c) Any party may object to the subpoena by filing of record written objections and serving a copy of the objections upon every other party to the action. (d)(1) If objections are received by the party intending to serve the subpoena prior to its service, the subpoena shall not be served. The court upon motion shall rule upon the objections and enter an appropriate order. (2) If objections are not received as provided in paragraph (1), the subpoena may be served subject to the right of any party or interested person to seek a protective order.

Note the mechanics. Objections are filed of record, not merely served. And if they arrive before service, "the subpoena shall not be served" — full stop, until the court rules.

Rule 4009.24 prescribes the wording of both documents. The notice of intent tells the recipient: "You have twenty (20) days from the date listed below in which to file of record and serve upon the undersigned an objection to the subpoena. If no objection is made, the subpoena may be served."

And a certificate before you serve

Rule 4009.22(a) makes the whole sequence auditable. A party may serve the subpoena "only if it is identical to the subpoena attached to the notice of intent to serve the subpoena" and only if it has filed of record a certificate stating:

(1) the notice of intent to serve a subpoena was mailed or delivered to each party at least twenty days prior to the date on which the subpoena is sought to be served, (2) a copy of the notice of intent, including the proposed subpoena attached to the notice of intent, is attached to the certificate, (3) no objection to the subpoena has been received, and (4) the subpoena which will be served is identical to the subpoena which is attached to the notice of intent to serve the subpoena.

Four certifications, and identity is required twice — once in the opening words of the rule and again as certification (4). A subpoena that has been tidied, narrowed or re-dated after the notice went out is no longer identical, and the twenty days have to run again on the new version.

The certificate has its own prescribed form in Rule 4009.25.

The subpoena tells the recipient it can ask for its costs

Rule 4009.26 prescribes the discovery subpoena itself, and the form does more work than most:

Within twenty (20) days after service of this subpoena, you are ordered by the court to produce the following documents or things: at . (Address) You may deliver or mail legible copies of the documents or produce things requested by this subpoena, together with the certificate of compliance, to the party making this request at the address listed above. You have the right to seek in advance the reasonable cost of preparing the copies or producing the things sought.

Three things the recipient is told on the face of the document: twenty days, that mailing legible copies with a certificate of compliance is sufficient compliance, and that it may seek the reasonable cost in advance.

That last sentence matters. A custodian facing a large production does not need to find the rule or negotiate — the subpoena itself confirms the entitlement.

A subpoena cannot be used to summon someone to your office

Rule 234.1 limits what the trial-and-hearing subpoena is for, and subsection (c) is unusually blunt:

(b) A subpoena may be used to command a person to attend and to produce documents or things only at (1) a trial or hearing in an action or proceeding pending in the court, or (2) the taking of a deposition in an action or proceeding pending in the court. (c) A subpoena may not be used to compel a person to appear or to produce documents or things ex parte before an attorney, a party or a representative of the party.

Two permitted destinations, and an express prohibition on the third. A Rule 234.1 subpoena directing a witness to attend at counsel's office is outside the rule. Where documents are what is wanted from a non-party, the Rule 4009.21 route above is the one to use.

Rule 234.1(d) adds a general timing standard rather than a number: "A subpoena shall be served reasonably in advance of the date upon which attendance is required."

Fees are tendered at service, and mailed subpoenas need a check

Rule 234.2(c):

The fee for one day's attendance and round trip mileage shall be tendered upon demand at the time the person is served with a subpoena. If a subpoena is served by mail, a check in the amount of one day's attendance and round trip mileage shall be enclosed with the subpoena.

Note the difference between the two halves. On personal service the fee is tendered upon demand. On mail service there is no demand to make, so the check is enclosed as a matter of course.

Service is otherwise straightforward: "A copy of the subpoena may be served upon any adult within the Commonwealth by an adult," and the prothonotary issues the subpoena "signed and under the seal of the court but otherwise in blank."

Minors, and prisoners

Rule 234.2(e) requires service on two people where the witness is a minor: "a copy of the subpoena shall be served upon the minor and the guardian of the minor within the Commonwealth by an adult." "Guardian" is defined to mean "any parent, custodian, or other person who has legal custody of a minor, or person designated by the court to be a temporary guardian for purposes of a proceeding."

Serving the minor alone requires going to court first: it is permitted only "Upon prior court approval and good cause shown."

For someone in custody, Rule 234.2(d) replaces the subpoena with an order: the court "may compel the attendance of any person confined in jail or prison by issuing, upon motion, an order directed to the custodian of the person so confined to release the person to the custody of a sheriff or other appropriate agent."

Who can move to quash — and who cannot be arrested

Rule 234.4(b) draws the circle wide:

A motion to quash a subpoena, notice to attend or notice to produce may be filed by a party, by the person served or by any other person with sufficient interest. After hearing, the court may make an order to protect a party, witness or other person from unreasonable annoyance, embarrassment, oppression, burden or expense.

"Any other person with sufficient interest" — so a person whose confidential material sits inside a third-party production has standing without being either a party or the recipient.

The serving party also has a unilateral power under Rule 234.4(a): it "may excuse compliance."

On the enforcement side, Rule 234.5(a) allows a bench warrant and, for wilful failure, contempt — with one important exception:

No bench warrant may be issued and no adjudication of contempt may be made for the nonappearance of a witness served by ordinary mail pursuant to Rule 234.2(b)(3) unless the witness has returned the signed form of acknowledgment prescribed by Rule 234.9.

A witness served by ordinary mail who never signed the acknowledgment is not exposed to arrest. That is the trade-off Pennsylvania makes for allowing the cheap service method, and it is a reason to use personal service where attendance actually matters.

Rule 234.9 prescribes the acknowledgment form, which asks the signer to indicate any relationship to an entity or authority to receive the subpoena on another's behalf.

Parties are treated differently

Where the person who fails to comply is a party, Rule 234.5(b) routes the consequence through the discovery sanctions rule rather than the contempt power:

If a party fails to comply with a subpoena, a notice to attend or a notice to produce, the court may enter any order imposing appropriate sanctions authorized by Rule 4019(c) and, if the failure to comply is for the purpose of delay or in bad faith, the court may impose on that party the reasonable expenses actually incurred by the opposing party by reason of such delay or bad faith, including attorney's fees. If the failure is wilful the court, after hearing may adjudge the party to be in contempt.

Three escalating levels: Rule 4019(c) sanctions, expenses for delay or bad faith, and contempt for wilful failure after a hearing.

A short checklist

If you are issuing one:

Give twenty days' notice of intent to every party, with the proposed subpoena attached.
Do not send that notice to the witness. The rule forbids it.
File the certificate before serving, and make sure the subpoena is identical to the one you circulated.
If objections arrive before service, do not serve. Go to court.
Enclose a check if you serve a trial subpoena by mail.
Serve a minor's guardian too, unless you have prior court approval.

If you have been served:

You have twenty days to produce under a Rule 4009.22 subpoena, and may mail legible copies with a certificate of compliance.
Ask for your costs in advance — the subpoena form itself confirms the right.
Anyone with sufficient interest can move to quash, not only the recipient.
If you were served by ordinary mail and never signed the acknowledgment, no bench warrant can issue for nonappearance.

Where these rules live

This page explains what the rules say. It isn't legal advice, and the sanctions provisions of Rule 4019 are not covered here.

How this guide is sourced. Every procedural statement here is drawn from the text of the rules named above, each of which is reproduced verbatim on its own page on this site. Quoted rule language appears in quotation marks or block quotes; everything else is original writing. Last verified August 17, 2026.

This page explains what the rules say. It is legal information, not legal advice, and it cannot tell you how a rule applies to your situation. Deadlines are often short and some are not extendable — if the outcome matters, talk to a lawyer or your court’s self-help center.