Which statement accurately describes a bill of particulars in NY civil practice?

• A. Its purpose is to obtain evidence in discovery and it must be responded to within 15 days
• B. Its purpose is to amplify pleadings, not to obtain evidence, and responses are due within 30 days
• C. It is optional and rarely used
• D. It can be served only after a judgment

Answer: (B)

In NY civil practice, a bill of particulars is a tool to amplify pleadings, not to obtain evidence. It requires the party who is defending or answering to spell out, in concrete detail, the facts supporting each asserted claim or defense—dates, amounts, places, names, sequence of events, and other specifics. This helps the court and the opposing party understand exactly what is being alleged and what must be proven at trial, reducing vague or ambiguous pleadings. It is not a discovery device for gathering evidence; for that purpose, other discovery methods like interrogatories, document demands, and depositions are used. The response to a demand for a bill of particulars is due within 30 days after service, unless the court modifies that deadline.