Definition
Intervening damages are damages suffered by an appellee (the party who won below) as a result of delay caused by the opposing party's appeal. When a losing party appeals a judgment, the winner may be kept from collecting or acting on that judgment for months or years. Any harm that flows directly from that delay — lost use of money, deterioration of property, continued accrual of losses — constitutes intervening damages. The term describes damages that arise in the gap between the original judgment and its final resolution on appeal.
This is a narrow, procedural term of art. It does not mean "damages caused by an intervening act" in the tort-law sense — a confusion that substantially affects research utility and is addressed below.
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Common Confusion
The phrase "intervening damages" sounds like it belongs to the tort doctrine of intervening and superseding causes — the body of law addressing whether a third party's act or a subsequent event breaks the chain of causation between a defendant's negligence and a plaintiff's injury. It does not. These are entirely separate concepts.
In tort causation doctrine, the relevant terms are intervening cause, superseding cause, and proximate cause. "Intervening damages" in its historically defined sense refers only to appellate procedure: harm to an appellee caused by the delay of an appeal. A researcher who encounters the phrase in a tort context should read carefully to determine whether the writer is using it precisely (in the procedural sense) or loosely (to describe damages flowing from some intervening act or cause). Conflation of the two is a genuine trap in secondary sources.
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Why It Matters in Research
The term is nearly extinct in modern legal writing, which creates two distinct research hazards.
First, historical sources use the term exclusively in its procedural, appellate sense, but modern sources — particularly tort treatises and briefs — sometimes employ "intervening damages" as informal shorthand for damages attributable to an intervening cause. These are not the same concept, and a researcher pulling sources across eras may silently mix the two without realizing it.
Second, the procedural concept itself has largely been absorbed into modern rules governing supersedeas bonds, stays pending appeal, and post-judgment interest. When an appellee seeks to be made whole for losses suffered during an appeal, the operative framework today is typically post-judgment interest under statute or rule, not a free-standing claim for "intervening damages." Researchers working on appellate procedure, judgment enforcement, or the costs of appeal should look to those modern mechanisms rather than expecting the term to appear in current practice.
The single supporting citation in both Black's and Bouvier's — "1 Tyler, 267" — refers to Tyler's Reports from Vermont (early 19th century). This is an exceedingly thin historical anchor for a term that appears in two major dictionaries, and researchers should not treat this as a settled doctrine with deep common-law roots.
If you encounter the term in a historical record and need to understand what remedy the party was seeking, the core question is always the same: was there an appeal, was it delayed, and did the winning party below suffer identifiable harm from that delay? That harm, if compensable, is what the old sources called intervening damages.
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Historical Dictionary Support
Black's Law Dictionary and Bouvier's Law Dictionary are in complete agreement: both define intervening damages as damages suffered by an appellee due to delay caused by an appeal, and both cite the same single source, 1 Tyler 267. The definitions are functionally identical, suggesting that one drew from the other or both drew from a common predecessor source.
What the historical dictionaries do not address is how such damages were calculated, what procedural mechanism was used to claim them, or whether they were available as of right or only on a showing of bad faith in the appeal. The entire doctrine is left as a one-sentence entry with a single citation — indicating this was a recognized but underdeveloped concept, not a fully litigated body of law.
Neither source anticipates the modern confusion with tort causation doctrine. Given that "intervening cause" as a tort concept was also developing during the 19th century, the potential for semantic overlap was already present when these dictionaries were written, but it went unremarked.
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Jurisdictional Note
No evidence of significant interstate variation in the historical usage of this term. Its near-disappearance from modern practice means jurisdictional comparison is largely moot. Researchers should apply jurisdiction-specific rules on post-judgment interest and stays pending appeal rather than searching for a modern analog to "intervening damages" by name.
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Encyclopedia Cross-Reference
torts_15: Negligence — Intervening and Superseding Causes (The Law Mind Torts & Personal Injury Encyclopedia) — essential for distinguishing the tort causation doctrine from this procedural term
torts_18: Negligence — Damages — Future Damages and Present Value (The Law Mind Torts & Personal Injury Encyclopedia) — relevant context for how damages are measured across time
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