Also known as:duplicates · duplication · duplicate original
Written by attorneys · grounded in primary & secondary sources — see below
A counterpart produced by a mechanical, photographic, chemical, electronic, or other equivalent process or technique that accurately reproduces the original. A duplicate is admissible to the same extent as the original unless a genuine question is raised about the original's authenticity or the circumstances make it unfair to admit the duplicate.
Sources & Authorities
How it applies
Common Examples
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Admitting Photocopy of Contract
Diego Duarte offers a photocopy of a signed sales agreement to prove its terms after the original was stored in an out-of-state archive. The opposing party raises no specific claim that the photocopy was altered or that the original differs. The court admits the photocopy because it qualifies as a duplicate produced by a standard reproduction process and no authenticity issue or unfairness appears.
Summary Chart Access Request
Dominion Capital offers a one-page summary of thousands of transaction records and invites Deanna Davenport to inspect the underlying files at its headquarters during two business days. Davenport objects that the window is too short. The court finds the offer of the originals and duplicates satisfies the access requirement and admits the summary.
Select any source to read its text and confirm it supports the definition.
Statutes
Federal Rules
Uniform Acts
Model Codes
Restatements
Hornbooks
Course Outlines
Study Supplements
Dictionaries
Duplicate Warrant Presentation
An officer arrests Daniel Diaz without the physical warrant in hand. The officer later shows Diaz a duplicate original warrant that accurately reproduces the judge-signed document. The presentation satisfies the requirement to display the warrant or its duplicate as soon as possible after arrest.
Missouri v. Seibert542 U.S. 600 (2004)
Class Action Record Duplication
Wal-Mart employees seek to use duplicate personnel files to show common employment practices across stores. The court evaluates whether the duplicates accurately reproduce the originals and whether any authenticity dispute prevents their use in proving class-wide issues.
Wal-Mart Stores, Inc. v. Dukes564 U.S. 338 (2011)
Knowing Conversion of Duplicate Records
Dominic Drake removes duplicate sales invoices from company files knowing they accurately reflect the original entries. The court examines whether his knowledge that the duplicates reproduced the originals supports a finding of knowing conversion.
Morrissette v. United States342 U.S. 246, 72 S.Ct. 240, 96 L.Ed. 288.
Duplicate Document in Antitrust Records
Diamond Manufacturing produces duplicate copies of internal pricing memos during discovery. The court assesses whether the duplicates accurately reproduce the originals and whether any unfairness arises from their admission in proving market conduct.
United States v. Grinnell Corp.384 U.S. 563, 591 (1966)
Common questions
Frequently Asked
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When is a photocopy excluded even though it qualifies as a duplicate?+
A photocopy is excluded when a genuine question exists about the original's authenticity or when admitting the duplicate would be unfair, such as when only part of the original is reproduced and the missing portion alters the meaning.
Supporting sources
Does Rule 1003 require the proponent to explain why the original is unavailable?+
No. Rule 1003 permits admission of a duplicate without any showing that the original is lost or unavailable, provided no authenticity dispute or unfairness exists.
Supporting sources
How does the definition of duplicate interact with the best evidence rule?+
The best evidence rule generally requires an original, but Rule 1003 creates an exception that treats a qualifying duplicate as admissible to the same extent as the original, thereby satisfying the rule without production of the original.
Supporting sources
What must a party do when offering a summary under Rule 1006 that relies on duplicates?+
The proponent must make the underlying originals or duplicates available for examination or copying by other parties at a reasonable time and place, and the court may order production in court if needed.
Supporting sources
564 U.S. 338 (2011)Evidence
…whether the individual differences “impede” common adjudication, ante , at 10 (internal quotation marks omitted), the Court duplicates 23(b)(3)’s question whether “a class action is superior” to other modes of adjudication. Indeed, Professor Nagareda, whose “dissimilarities” inquiry the Court endorses, developed his…