Also known as: substantially undue prejudicial effect · unfair prejudice · FRE 403
Written by attorneys · grounded in primary & secondary sources — see below
A risk of harm to a client arising from recent adverse publicity not initiated by the lawyer or client. The phrase identifies the precise danger that triggers a limited safe-harbor response under the ethics rules.
After a newspaper published false reports that lawyer Maya Lee’s client had fled the jurisdiction, Lee held a brief press conference. She stated only that her client remained in the state and was cooperating with authorities. The statement was permitted because it was limited to information necessary to mitigate the substantial undue prejudicial effect of recent publicity not initiated by the lawyer or client.
Local television repeatedly aired allegations that Dr. Patel’s surgical center was under criminal investigation. Patel’s counsel posted a short statement on the firm website noting that no charges had been filed and the investigation remained civil. The post was protected because it responded only to the substantial undue prejudicial effect of recent adverse publicity the lawyer had not initiated.
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A blog falsely reported that attorney Nora Quinn’s client had confessed to arson. Quinn issued a one-sentence release stating her client had consistently maintained innocence and welcomed a fair trial. The release fell within the safe harbor because it was narrowly tailored to neutralize the substantial undue prejudicial effect of publicity not started by the lawyer or client.
The court excludes relevant evidence when the probative value is substantially outweighed by a danger of unfair prejudice, confusing the issues, misleading the jury, undue delay, wasting time, or needlessly presenting cumulative evidence. Graphic photographs of injuries to unrelated inmates were excluded because their vivid nature risked inflaming the jury while adding little to the specific claim at issue.
When the defendant offers to stipulate to felon status, the government's refusal to accept the stipulation and introduction of the full record may result in unfair prejudice that substantially outweighs probative value. The name and nature of the prior conviction generally carries a risk of unfair prejudice exceeding its probative value when the defendant's status as a felon is the only fact at issue.
Independently relevant uncharged misconduct is admissible if there is sufficient evidence from which the jury could reasonably find that the defendant committed the prior act and if, under Rule 403, the probative value on a non-propensity issue is not substantially outweighed by the danger of unfair prejudice.