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Rule 25.Substitution of parties

Part IV: Parties · Last amended January 1, 1991 · Last verified July 28, 2026

In one sentenceRule 25 governs what happens when a party dies, becomes incompetent, transfers an interest, or leaves public office while a Delaware action is pending, setting a 90-day deadline to move for substitution once a death is suggested on the record and providing for automatic substitution of a public officer's successor.

Full Text of Rule 25

Text sizeJump to: (a) (b) (c) (d)

(a) Death.
(1) If a party dies and the claim is not thereby extinguished, the Court may order substitution of the proper parties. The motion for substitution may be made by any party or by the successors or representatives of the deceased party and, together with the notice of hearing, shall be served on the parties as provided in Rule 5 and upon persons not parties in the manner provided in Rule 4 for the service of a summons, and may be served in any county. Unless the motion for substitution is made not later than 90 days after the death is suggested upon the record by service of a statement of the fact of the death as provided herein for the service of the motion, the action shall be dismissed as to the deceased party in all cases except those in which an application for an interlocutory appeal has been made.
(2) In the event of the death of one or more of the plaintiffs or of one or more of the defendants in an action in which the right sought to be enforced survives only to the surviving plaintiffs or only against the surviving defendants, the action does not abate. The death shall be suggested upon the record and the action shall proceed in favor of or against the surviving parties.
(b) Incompetency. If a party becomes incompetent, the Court upon motion served as provided in subsection (a) of this Rule may allow the action to be continued by or against the party’s representative.
(c) Transfer of interest. In case of any transfer of interest, the action may be continued by or against the original party, unless the Court upon motion directs the person to whom the interest is transferred to be substituted in the action or joined with the original party. Service of the motion shall be made as provided in subdivision (a) of this Rule.
(d) Public officers; death or separation from office.
(1) When an officer of the State of Delaware, a county, city or other governmental agency is a party to an action in an official capacity and during its pendency dies, resigns, or otherwise ceases to hold office, the action does not abate and the officer’s successor is automatically substituted as a party. Proceedings following the substitution shall be in the name of the substituted party, but any misnomer not affecting the substantial rights of the parties shall be disregarded. An order of substitution may be entered at any time, but the omission to enter such an order shall not affect the substitution.
(2) When an officer of the State of Delaware, county, city or other governmental agency sues or is sued in an official capacity, the officer may be described as a party by an official title rather than by name; but the court may require that the officer’s name be added.

Amendment History

Amended, effective July 1, 1970; Oct. 15, 1980; Jan. 1, 1991.

Plain-English Summary

Rule 25(a)(1) covers death. If a party dies and the claim isn't extinguished, the court may order substitution of the proper parties on a motion by any party or by the deceased party's successors or representatives, served together with notice of the hearing on the parties under Rule 5 and on non-parties in the manner Rule 4 requires for serving a summons, and that service may happen in any county. Unless the substitution motion is made no later than 90 days after the death is suggested on the record by service of a statement of the fact of death, the action must be dismissed as to the deceased party — except in cases where an application for an interlocutory appeal has been made. Rule 25(a)(2) covers the narrower case where the right sought to be enforced survives only to the surviving plaintiffs or only against the surviving defendants: there the action doesn't abate at all; the death is suggested on the record and the action proceeds in favor of or against the survivors.

Rule 25(b) extends similar treatment to incompetency: if a party becomes incompetent, the court, on a motion served the same way as a death motion, may allow the action to continue by or against that party's representative. Rule 25(c) addresses a transfer of interest during the litigation — the action may continue by or against the original party unless the court, on motion, directs that the person to whom the interest was transferred be substituted or joined, with the motion served the same way as under subdivision (a).

Rule 25(d) handles public officers. When an officer of the State of Delaware, a county, a city, or another governmental agency is a party in an official capacity and dies, resigns, or otherwise leaves office while the case is pending, the action doesn't abate — the successor is automatically substituted, and proceedings continue in the substituted party's name, with any misnomer that doesn't affect substantial rights disregarded. An order of substitution can be entered at any time, and failing to enter one doesn't affect the substitution itself. When such an officer sues or is sued in an official capacity, the officer can be described by official title rather than by name, though the court may require the officer's name to be added.

Frequently Asked Questions

What happens if a party dies while a Delaware lawsuit is pending?

Rule 25(a)(1) allows the court to order substitution of the proper parties, on motion by any party or by the deceased party's successors or representatives, if the claim survives the death.

Is there a deadline to move for substitution after a party's death?

Yes. Rule 25(a)(1) requires the motion no later than 90 days after the death is suggested on the record by service of a statement of the fact of death, or the action must be dismissed as to the deceased party, except where an interlocutory appeal application has been made.

What if the right being enforced survives only to the surviving parties?

Rule 25(a)(2) states the action doesn't abate in that situation; the death is suggested on the record and the case proceeds in favor of or against the surviving parties without a substitution motion.

What happens to a case against a government officer sued in an official capacity who leaves office?

Rule 25(d)(1) provides that the action doesn't abate — the officer's successor is automatically substituted, and proceedings continue in that substituted party's name.

Does transferring an interest during a lawsuit require substituting a new party?

Not automatically. Rule 25(c) allows the action to continue by or against the original party unless the court, on motion, directs that the transferee be substituted or joined.

Source & verification. Rule text is reproduced verbatim from the Delaware Rules of Civil Procedure for the Superior Court, adopted by the Superior Court of the State of Delaware. Last verified July 28, 2026. · Official source
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