The New York civil discovery process, governed by Article 31 of the Civil Practice Law and Rules (CPLR), gives each side broad pretrial access to the other’s evidence — documents, sworn testimony, physical items, expert opinions, and electronic data — under a court-set schedule enforced by motions to compel and escalating sanctions. The guiding standard is “full disclosure of all matter material and necessary” to prosecute or defend a case, and courts read that phrase expansively.1New York State Senate. New York Civil Practice Law and Rules Law 3101 – Scope of Disclosure What follows is how each tool works, what deadlines attach to it, and what happens when a party stonewalls.
What Counts as Discoverable
“Material and necessary” is a low bar. If information has any reasonable connection to the claims or defenses in the case, it’s almost certainly discoverable: documents, testimony, financial records, medical records, internal emails, expert reports. In personal injury cases, a defendant can even require the plaintiff to submit to a medical examination to verify alleged injuries.2New York State Senate. New York Civil Practice Law and Rules Law 3121 The scope is intentionally wide.
The main limit is privilege. Attorney-client communications, attorney work product, and materials prepared because litigation was anticipated are all shielded.1New York State Senate. New York Civil Practice Law and Rules Law 3101 – Scope of Disclosure Those protections aren’t absolute — communications made to further a crime or fraud can lose their privilege — and stamping “privileged” on a document isn’t enough. When a party withholds items on privilege grounds, CPLR 3122 requires a privilege log identifying each withheld document by type, general subject matter, and date, along with the legal basis for withholding it.3New York State Senate. New York Civil Practice Law and Rules Law R3122 – Objection to Disclosure, Inspection or Examination; Compliance Vague logs invite challenges.
How the Timeline Gets Set
Discovery doesn’t just start when one side fires off demands. The court sets the schedule, typically through a preliminary conference, mapping out which tools the parties will use, in what order, and by when.4Legal Information Institute. 22 NYCRR 202.12 – Preliminary Conference The conference also touches on whether mediation or another form of alternative dispute resolution fits the case.
Uniform Rule 202.12 sets default outer limits the preliminary conference order must respect: twelve months from the filing of a request for judicial intervention in a standard case, or fifteen months in a complex case.4Legal Information Institute. 22 NYCRR 202.12 – Preliminary Conference The court can shorten or extend those windows, but they frame expectations. Waiting until month ten to start depositions invites an extension fight or leaves you unprepared.
Document Demands
CPLR 3120 lets any party serve a notice demanding the other side produce documents, electronically stored information, or physical items for inspection and copying, and it can also compel access to land or property for inspection, testing, or photography.5FindLaw. New York Consolidated Laws, Civil Practice Law and Rules – CVP Rule 3120 The demand must describe items with reasonable specificity, individually or by category, and give the responding party at least twenty days before production is due.
If the responding party objects, it must serve those objections with detailed reasons within twenty days of receiving the demand.3New York State Senate. New York Civil Practice Law and Rules Law R3122 – Objection to Disclosure, Inspection or Examination; Compliance A blanket “overly broad” objection won’t survive. The demanding party can move to compel under CPLR 3124 when objections seem unfounded.6New York State Senate. New York Civil Practice Law and Rules Law R3124 – Failure to Disclose; Motion to Compel Disclosure Documents must be produced either as they’re kept in the ordinary course of business or organized to match the categories in the request. Dumping thousands of unsorted pages and calling it compliance is not compliance.
Interrogatories
Interrogatories are written questions the other party must answer under oath. They’re good for pinning down basic facts: names, dates, the basis for a claim, insurance coverage. CPLR 3130 restricts how they can be combined with other tools.7New York State Senate. New York Civil Practice Law and Rules Law 3130 – Use of Interrogatories
In negligence-based personal injury, property damage, and wrongful death cases, a party cannot serve interrogatories on someone and also depose that same person without court permission. In practice, parties in those cases almost always choose depositions. Outside negligence cases, you can use both tools on the same party, but you cannot serve interrogatories and also demand a bill of particulars from the same party (except in matrimonial actions).
General New York practice imposes no fixed numerical cap on interrogatories, though courts can limit them if the volume is unreasonable. The Commercial Division is stricter: interrogatories are capped at twenty-five, including subparts, unless the preliminary conference order says otherwise.8Legal Information Institute. N.Y. Comp. Codes R. and Regs. Tit. 22 R. 202.70.11-a – Interrogatories
Depositions
Depositions, sometimes called examinations before trial, are the workhorse of New York discovery. An attorney questions a witness under oath, a stenographer records it, and the transcript can be used to challenge the witness’s credibility at trial if their story changes. CPLR 3107 through 3117 govern them.
The party scheduling a deposition must give every other party at least twenty days’ written notice, identifying the witness by name and address, or by a description sufficient to identify them if the name isn’t known.9New York State Senate. New York Civil Practice Law and Rules Law R3107 – Notice of Taking Oral Questions A plaintiff who wants to depose a defendant before that defendant’s time to answer has expired needs leave of court first.10FindLaw. New York Consolidated Laws, Civil Practice Law and Rules – CVP Rule 3106
The CPLR sets no statewide time limit on how long a single deposition can last. The Commercial Division caps depositions at seven hours per witness unless the parties agree otherwise or the court orders more time.11Legal Information Institute. N.Y. Comp. Codes R. and Regs. Tit. 22 R. 202.70.11-d – Limitations on Depositions Outside the Commercial Division, courts can still intervene if questioning becomes repetitive or harassing, but there is no bright-line cutoff. Objections must be brief. Attorneys cannot coach witnesses with speaking objections and cannot instruct a witness to refuse to answer unless the question calls for privileged information. If a witness refuses a legitimate question, the examining attorney can seek a court order compelling a response.
Requests for Admission
Requests for admission under CPLR 3123 are meant to take undisputed facts off the table before trial. One party sends written requests asking the other to admit or deny specific facts — that a contract was signed on a particular date, that a photograph accurately depicts a scene — and the responding party has twenty days to admit, deny, or explain in a sworn statement why they can’t do either.12New York State Senate. New York Civil Practice Law and Rules Law 3123
This is where many parties trip. Miss the twenty-day window entirely, and every fact in the request is deemed admitted automatically. That deemed admission can reshape a case without a single hearing. And if a party denies a fact that the requesting party later proves at trial, the court can force the denying party to pay the costs of proving it. Ignoring an admission request is one of the fastest ways to lose control of a case.
Getting Evidence From Non-Parties
Discovery isn’t limited to the parties. CPLR 3101(a)(4) allows discovery from non-parties, with an extra procedural step: the notice or subpoena must state the reasons the information is being sought.1New York State Senate. New York Civil Practice Law and Rules Law 3101 – Scope of Disclosure For parties, you don’t explain yourself. For non-parties, you do.
To compel a non-party to produce documents, you serve a subpoena duces tecum under CPLR 3120 with at least twenty days’ notice. The non-party can object within twenty days on the same grounds a party would — relevance, privilege, undue burden — and the requesting party can move to compel if the objection is unfounded. The party seeking discovery from a non-party must cover that person’s reasonable production expenses.3New York State Senate. New York Civil Practice Law and Rules Law R3122 – Objection to Disclosure, Inspection or Examination; Compliance
Medical records carry an additional safeguard. A subpoena to a medical provider requesting patient records must be accompanied by the patient’s written authorization, and the subpoena itself must state in bold type that records should not be produced without that authorization or a court order. A provider who receives a subpoena without the authorization can simply ignore it.
Subpoenaed witnesses receive modest statutory compensation: fifteen dollars per day for attendance and twenty-three cents per mile of travel from the place of service to the place of attendance, with no mileage for travel entirely within a city. A non-party witness subpoenaed for a deposition gets an additional three dollars per day.13New York State Senate. New York Civil Practice Law and Rules Law 8001 – Persons Subpoenaed; Examination Before Trial; Transcripts of Records
Expert Witness Disclosures
On request, each party must identify every expert it plans to call at trial and provide the expert’s qualifications, the subject matter of expected testimony, the substance of the opinions, and a summary of the grounds for those opinions.1New York State Senate. New York Civil Practice Law and Rules Law 3101 – Scope of Disclosure The disclosure gives the other side enough to prepare cross-examination and, if needed, retain a rebuttal expert.
Medical malpractice carves out a notable exception. A party responding to an expert disclosure request in a medical, dental, or podiatric malpractice action can withhold the expert’s name while still disclosing qualifications, opinions, and the basis for those opinions. The rationale is to prevent professional retaliation or pressure that medical experts sometimes face when identified in malpractice litigation.
Electronic Evidence and Preservation
Emails, text messages, social media posts, database records, and metadata are all discoverable under Article 31, and they’ve become the central battleground in many cases. Volume changes the stakes: the rules around preserving and producing electronic data carry real consequences.
When the Duty to Preserve Kicks In
The duty to preserve relevant electronic information starts as soon as litigation is reasonably anticipated, not when a lawsuit is filed. New York adopted that standard in VOOM HD Holdings LLC v. EchoStar Satellite L.L.C.14New York State Law Reporting Bureau. VOOM HD Holdings LLC v EchoStar Satellite LLC 2012 NY Slip Op 00658 Once the trigger is met, you must implement a litigation hold — an affirmative step to halt routine deletion of documents that could be relevant. Letting an auto-delete policy destroy emails after you knew a lawsuit was coming is exactly the conduct that draws spoliation sanctions.
Courts evaluate spoliation on three factors: whether the party had an obligation to preserve, whether the destruction involved a culpable mental state (negligence counts, not just intent), and whether the lost evidence was relevant. When destruction is intentional, relevance is presumed. When it’s merely negligent, the party seeking sanctions must prove the destroyed material would have helped their case.15New York State Unified Court System. Spoliation – New York Guide to Evidence Sanctions range from adverse inference instructions telling the jury to assume the missing evidence was unfavorable, to striking pleadings in the most extreme cases.
Production Format and Social Media
Parties negotiate how electronic documents will be produced: native format, searchable PDFs, with or without metadata. Courts often require meet-and-confer sessions to work out search terms, date ranges, and custodians before production begins, especially in data-heavy cases.
Social media has its own landmark. In Forman v. Henkin, the Court of Appeals rejected the idea that private social media posts are shielded from discovery simply because the account holder chose not to share them publicly. The correct test is whether the account is reasonably likely to contain relevant information, applying the same standard that governs all other discovery.16Justia Law. Forman v. Henkin A plaintiff claiming a disabling injury who posts vacation photos or gym selfies to a private account should expect those posts to be discoverable. Courts tailor production orders to avoid sweeping in unrelated personal content, but a privacy setting is not a barrier.
Protecting Sensitive Information
When discovery threatens to expose genuinely sensitive information — trade secrets, confidential financial data, private medical details — any party, or even a non-party, can ask the court for a protective order under CPLR 3103. The court can deny, limit, or regulate any discovery device to prevent unreasonable expense, embarrassment, or competitive harm.17New York State Senate. New York Civil Practice Law and Rules Law 3103 – Protective Orders
Protective orders take many forms. Sealing records. Redacting identifying details. Limiting who can view produced documents. Restricting how information can be used outside the litigation. In commercial cases, companies routinely seek “confidentiality” or “attorneys’ eyes only” designations to keep internal strategy out of competitors’ hands. In matrimonial disputes, courts use protective orders to shield financial disclosures from public view.
One procedural detail: filing a motion for a protective order automatically suspends disclosure of the disputed material until the court rules. That stay gives real breathing room, but it also invites tactical delay, and courts are alert to it.
When the Other Side Won’t Cooperate
If a party ignores a discovery request or gives evasive responses, the primary tool is a motion to compel under CPLR 3124. But before filing, Uniform Rule 202.7 requires an affirmation of good faith: your attorney must certify that counsel conferred, or attempted to confer, with the other side to resolve the dispute without court intervention. The affirmation must describe when the conferral happened, what was discussed, and what was resolved, or explain why no conferral occurred.18Legal Information Institute. 22 NYCRR 202.7 – Calendaring of Motions; Uniform Notice of Motion Form; Affirmation of Good Faith Courts routinely reject discovery motions that skip this step.
If the motion is granted and the disobedient party still doesn’t comply, CPLR 3126 authorizes escalating sanctions. The court can resolve disputed issues against the non-compliant party, treating the withheld information as if it supports the other side’s version of events. It can preclude evidence, barring the disobedient party from introducing certain testimony, documents, or proof at trial. And it can strike pleadings or enter a default judgment, effectively ending the case against the party who refused to cooperate.19New York State Senate. New York Civil Practice Law and Rules Law 3126 Striking pleadings is drastic and courts reserve it for willful or contumacious behavior, but in cases of extreme abuse they don’t hesitate. Monetary sanctions and attorney’s fee awards are also on the table when obstruction forces the other side into unnecessary motion practice.
Closing Discovery
Discovery closes formally when a party files a Note of Issue along with a Certificate of Readiness, certifying that all necessary pretrial proceedings are complete and the case is ready for trial. Uniform Rule 202.21 governs the process.20Legal Information Institute. 22 NYCRR 202.21 – Note of Issue and Certificate of Readiness for Trial
Any other party who believes the case is not actually trial-ready, because depositions remain incomplete or documents haven’t been produced, can move to vacate the Note of Issue within twenty days of service. The court will vacate it if a material statement in the Certificate of Readiness turns out to be wrong. If unusual circumstances arise after filing that require additional discovery, the court can grant permission on motion, but the bar is high. Once the Note of Issue is filed and unchallenged, the discovery window has functionally closed.