United States v. Paiva

United States Court of Appeals for the First Circuit · 1989 · Evidence

892 F.2d 148 (1st Cir. 1989)

Updated August 22, 2026

EvidenceRule 701Rule 702Rule 605bill of particularslay opiniondrug identificationjudicial comment

Facts

The government presented testimony from participants in cocaine transactions linking Paiva to Robert Anderson's cocaine distribution operation and to concealment of the resulting income. Christina Christo testified that, based on her prior cocaine use and her own observation and taste, a white powder she found in Paiva's shoe was cocaine. Detective Pike, a longtime police officer working in narcotics, testified that during a search of Anderson's apartment he found white powder, field tested it, and identified it as cocaine; the trial judge also explained to the jury what a field test was. Paiva defended on the theory that his dealings with Anderson and others involved gambling rather than drugs and argued that the tax-related money came from gambling.

Issue

Did the district court abuse its discretion by denying Paiva's request for a bill of particulars, by admitting Christina Christo's lay opinion and Detective Pike's identification testimony that substances were cocaine, and did the judge's explanatory comments about field testing require reversal? Also, was the evidence sufficient to support the convictions on the three counts appealed?

Rule

A bill of particulars is meant to enable preparation of a defense, avoid surprise, and protect against double jeopardy, and denial of one warrants reversal only for clear abuse of discretion shown by actual surprise at trial or actual prejudice to substantial rights. Under Rule 701, lay opinion is admissible if it is rationally based on the witness's own perception and helpful to understanding the testimony or determining a fact in issue; a lay witness's own experience may supply competence even on a subject outside ordinary common knowledge. A judge may explain, summarize, and comment on the evidence, but may not add to the evidence or assume the role of a witness; such error is reversible only if not harmless. Under Rule 702, a witness may qualify as an expert by knowledge, skill, experience, training, or education, and admission of such testimony is reviewed for abuse of discretion.

See the holding & full analysis

Create a free KwikCourt account to unlock the rest of this brief — and practice the case.

The court's holding and reasoning
Doctrine tests, pitfalls & exam hypotheticals
10 practice questions + 4 AI-graded essays on this case

Free sample · practice this case

Test yourself

One of 10 multiple-choice questions for this case. Pick an answer to see why.

In federal court in Boston, Leo Navarro was indicted for aiding and abetting distribution of methamphetamine on "multiple occasions during spring 2023." Before trial, the government produced phone records and surveillance logs showing calls and meetings on specific dates. The judge denied Leo's motion for a bill of particulars seeking every transaction date, amount, and participant.

On appeal after conviction, which argument gives Leo the best chance of obtaining reversal based on the denial of the bill of particulars?

Explanation. Reversal requires a clear abuse of discretion, and the defendant must show actual surprise at trial or actual prejudice to substantial rights. General complaints about limited detail are insufficient, especially where discovery provided specifics and the defendant did not claim surprise.