Definition
A bill to perpetuate testimony is an equitable proceeding filed in a court of equity to preserve the testimony of witnesses concerning a matter that is not yet in active litigation but is reasonably anticipated to become the subject of future legal dispute. The bill allows a party who fears the loss of evidence — through the death, advanced age, illness, or anticipated unavailability of witnesses — to have that testimony formally taken and recorded so it may be used if and when litigation eventually arises.
The remedy is anticipatory in nature. It does not resolve a dispute; it prevents the loss of proof that may be needed to resolve one. The court takes the testimony and holds it, in effect, against future need.
Common Confusion
The bill to perpetuate testimony is easily confused with a bill to take testimony de bene esse. The distinction is material: a bill de bene esse preserves testimony in a case already pending, where there is an immediate risk of losing a witness before trial. A bill to perpetuate testimony operates before any suit is commenced and is used when litigation is anticipated but has not yet begun. The two serve parallel purposes but occupy different procedural moments. Historical sources sometimes treat them together or use the terms loosely; researchers should verify which procedure is actually being described.
Why It Matters in Research
This is a fundamentally historical procedural device. Researchers will encounter it primarily in equity pleading records, treatise literature, and appellate opinions from the eighteenth and nineteenth centuries, when courts of equity held exclusive jurisdiction over evidence-preservation proceedings of this kind.
Several research traps require attention:
First, the bill to perpetuate testimony largely became obsolete in American practice after the merger of law and equity under the Federal Rules of Civil Procedure (1938) and equivalent state reforms. Rule 27 of the Federal Rules — governing depositions before action or pending appeal — is the modern functional successor. When reading historical equity records, do not assume modern Rule 27 concepts map cleanly onto the older bill; the procedural requirements and equitable principles differ in important respects.
Second, jurisdiction over these bills was strictly equitable. A court of law could not entertain them. In pre-merger research, this means the bill will appear only in equity-side records. Researchers working in merged court systems may find the device abandoned without formal notice, its function simply absorbed into modern pre-suit discovery.
Third, the stated purpose in historical sources — preserving evidence "to prevent future litigation" — is subtly distinct from a modern reader's expectation. Courts understood this to mean that preserved testimony might settle a dispute before it reached litigation, not merely that it would be available at trial. This framing reflects a broader equity philosophy about dispute resolution that does not translate directly into modern discovery practice.
Fourth, standing requirements were meaningful. A party could not file this bill speculatively. They were required to demonstrate a present interest in the subject matter and a reasonable apprehension of future litigation — not a mere hypothetical concern. Courts policed these requirements carefully.
Historical Dictionary Support
Rapalje & Lawrence define the bill as one "filed in order to procure the testimony of witnesses to be taken as to some matter not at the time before the courts, but which is likely at some future time to be in litigation," with the object of preserving evidence "in order to prevent future litigation." The entry cites Story's Equity Pleading (5th ed., § 300 et seq.) as the governing treatise authority.
The definition is accurate and serviceable but compressed. Story's treatment, referenced by Rapalje & Lawrence, provides the substantive doctrine: the requirements of a present interest, the danger of losing testimony, and the anticipatory nature of the proceeding. Researchers relying solely on Rapalje & Lawrence should proceed to Story for the procedural mechanics, including the requirement that defendants be given notice and an opportunity to cross-examine witnesses whose testimony is being perpetuated — a feature that distinguished this bill from purely ex parte evidence-gathering.
Historical dictionaries generally agree on the core definition. What they do not address is the device's subsequent fate: the shift from equity-side bills to statutory and rules-based pre-suit discovery, which renders these entries incomplete guides for anyone tracing the doctrine past the mid-twentieth century.
Jurisdictional Note
In federal practice, the bill to perpetuate testimony has been superseded by Federal Rule of Civil Procedure 27. Most states effected a parallel transition through their own procedural reforms. In jurisdictions that retained separate equity courts into the twentieth century, the bill may appear in records somewhat later than in merged-court systems.
Encyclopedia Cross-Reference
Law Mind Encyclopedia — Equity Pleading and Practice
Law Mind Encyclopedia — Evidence Preservation and Pre-Suit Discovery
Law Mind Encyclopedia — Bills in Equity (Taxonomy)