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New York Civil Procedure

Discovery, Depositions & Sanctions

Case notes on disclosure under CPLR article 31: what is material and necessary, depositions, conditional orders and sanctions under CPLR 3126.

98 articles from 2009–2026 · 2 current · 0 reviewed case notes · by Jason Tenenbaum

Current articles

Articles the firm treats as current: published since 2024, or older and re-checked against today's law. Most recently published or reviewed first.

Older archive

Case notes as they were written at the time. They have not been re-checked against later decisions, so treat them as history and confirm the current rule before relying on one.

2021 (1)
2020 (4)
2019 (5)
2018 (6)
2017 (11)
2016 (6)
2015 (8)
2014 (11)
2013 (15)
2012 (4)
2011 (4)
2010 (15)
2009 (6)

Frequently asked questions

What is discovery in New York civil litigation?

Discovery is the pre-trial exchange of information between the parties. CPLR 3101(a) requires full disclosure of all matter material and necessary in the prosecution or defense of an action, and CPLR Article 31 supplies the tools: depositions, written interrogatories, document demands, notices to admit, and physical or mental examinations under CPLR 3121(a). Privileged matter and attorney work product are not obtainable (CPLR 3101(b), (c)). Under CPLR 3103(a) a court may issue a protective order to prevent unreasonable annoyance, expense, embarrassment, disadvantage, or other prejudice. In no-fault suits by medical providers the sums in dispute are often small, so full discovery is the exception in practice.

What happens if a party fails to comply with discovery requests?

The party seeking disclosure may move to compel under CPLR 3124, and the court may impose penalties under CPLR 3126. CPLR 3126 applies when a party refuses to obey a disclosure order or wilfully fails to disclose information the court finds ought to have been disclosed. The statute lists three kinds of orders: deeming the disputed issues resolved against the disobedient party; barring that party from supporting or opposing designated claims or defenses or from using certain evidence or witnesses; and striking pleadings, staying the case, dismissing the action, or entering a default judgment. The court picks the penalty that is just.

What are interrogatories and how are they used in New York litigation?

Interrogatories are written questions one party serves on another after the action is commenced (CPLR 3130(1)). Answers must be in writing and under oath, and each answer or objection is due within twenty days of service (CPLR 3133(a), (b)). CPLR 3130(1) adds two limits: a party may not serve interrogatories on a party and also demand a bill of particulars from it, and in a negligence-only personal injury action a party may not both serve interrogatories on and depose the same party without leave of court. In Supreme and County Court, 22 NYCRR 202.20 caps interrogatories at 25, including subparts, unless the parties agree or the court orders otherwise.

What is a bill of particulars in New York personal injury cases?

A bill of particulars amplifies the pleadings so the other side knows the claims. CPLR 3043(a) lists what may be demanded in a personal injury action: the date, time and place of the occurrence; a general statement of the negligent acts or omissions claimed; whether actual or constructive notice is claimed; the injuries and which are permanent; in a motor vehicle case, how the plaintiff sustained a serious injury under Insurance Law § 5102(d); confinement and lost work; and special damages. CPLR 3043(b) allows a supplemental bill for continuing special damages without leave, at least thirty days before trial, but no new injury may be claimed that way.

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