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Discovery

The pre-trial process in which each side must hand over relevant evidence to the other.

Informational only - this is not legal advice. These definitions explain general legal vocabulary in plain English. They are not advice about your situation, reading them creates no attorney-client relationship, and the law differs from state to state and changes over time. For advice you can rely on, speak to a lawyer licensed in your state.

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What it means

Discovery is the stage of a lawsuit where each side is required to give the other access to relevant information: documents, written answers to questions, admissions, and sworn testimony. It is compulsory, not voluntary, and it is enforced by the court.

The design goal is to remove surprise. A civil trial in the United States is not intended to turn on evidence the other side has never seen, so the parties exchange it beforehand and the case is argued on a shared record.

Discovery is not unlimited. Requests must be proportionate to what the case is actually about, and material protected by a privilege - most commonly communications between a lawyer and their client - can be withheld, though the fact that something is being withheld generally has to be disclosed. Disputes over where those lines fall are among the most common reasons cases stall.

Where this comes from

Federal Rule of Civil Procedure 26(b)(1) sets the scope in federal civil cases: matter that is relevant to a claim or defense and proportional to the needs of the case. State courts apply their own rules of civil procedure.

When people hire a lawyer for this

Discovery obligations attach as soon as litigation is reasonably anticipated, which is usually earlier than people assume, and destroying or failing to preserve relevant records can carry consequences of its own. If a lawsuit is likely, the preservation question is worth asking before anything is deleted.

Worried about the cost? A lawyer can be hired for one part of a case only (limited-scope representation), may be paid from what a claim recovers (contingency fee), or may be free through a pro bono program or legal aid; a court can also waive its own filing fees.

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Related terms

Other entries in the same area of law, each written from the same primary sources.

AppealThe review of a trial court's decision by a higher court - what can be appealed and when (the final-judgment rule and its exceptions), the notice of appeal and why missing it is fatal, what "standard of review" means and why most appeals are lost on it, preserving error at trial, the record and briefs, and what an appellate court can and cannot do with the result.
Attorney-Client Privilege and Work ProductThe two protections that keep what a client tells a lawyer, and what a lawyer prepares for a case, from being forced into evidence - what the privilege covers and what it does not, who holds it and how it is waived, the crime-fraud exception, the separate and narrower work-product doctrine, and how each is asserted in discovery.
Burden of Proof (Standards of Proof)Who has to prove what, and how convincingly, before a court will rule for them - the difference between the burden of production and the burden of persuasion, the three standards (preponderance of the evidence, clear and convincing evidence, beyond a reasonable doubt) and where each applies, presumptions that shift the burden, and why the burden decides cases where the evidence is in balance.
Complaint and Answer (Pleadings)The documents that start a civil case and frame what it is about - what a complaint must contain, how a defendant answers it, what an admission, denial and affirmative defense each do, counterclaims and cross-claims, and what happens when a pleading is late, deficient or needs to be amended.
Contempt of CourtThe court's power to punish disobedience of its own orders - the mechanism that makes a court order more than a piece of paper.
Court Fee Waiver (In Forma Pauperis)How a person who cannot afford court filing fees asks the court to excuse them - the federal and state procedures, who usually qualifies, and what a waiver does not cover.
Default JudgmentA judgment entered because the person sued did not respond in time - the way most consumer debt lawsuits actually end.
DepositionSworn, recorded, out-of-court questioning of a witness by the opposing lawyer, before any trial.
Expert Witness (Daubert and Frye)A witness allowed to give opinions rather than only facts because of specialized knowledge - who qualifies, the gatekeeping test a judge applies to the reliability of the method (Daubert in federal court and most states, Frye in the rest), the written report and deposition that precede trial, the difference between a retained expert and a treating professional, and why a case can be lost when its expert is excluded.
Fee Agreement and RetainerThe engagement letter that sets what a lawyer will do and how they are paid - hourly, flat or contingent fees, retainers held in trust, costs, and what to do about a fee dispute.
Injunction and Temporary Restraining OrderThe court orders that require a party to do or stop doing something rather than pay money - the three stages (temporary restraining order, preliminary injunction, permanent injunction), the four-factor test for emergency relief, the bond the applicant must post, how an order is enforced through contempt, and why a violated order is obeyed first and challenged second.
Jurisdiction and VenueThe three questions every lawsuit has to answer before its merits can be heard - whether the court has power over this kind of case (subject-matter jurisdiction), power over this defendant (personal jurisdiction), and whether this is the right place within the system to bring it (venue) - what each requires, how each is challenged, and why a judgment entered without jurisdiction is void.
Limited-Scope Representation (Unbundled Legal Services)Hiring a lawyer for one defined part of a legal matter - advice, drafting a document, or a single hearing - instead of the whole case, and the written agreement that sets the boundary.
Mediation and ArbitrationTwo ways of resolving a dispute outside a trial that are constantly confused - one produces an agreement you can walk away from, the other a decision you generally cannot appeal.
Motion to DismissA request to end a case at the outset on the basis that, even if everything alleged is true, it does not amount to a legal claim.
Pro Bono Legal HelpFree legal work by volunteer lawyers - what the professional rules ask of lawyers, how people of limited means are matched with a volunteer, and why it is not the same as legal aid.
Release and Settlement AgreementThe document that ends a claim by giving up the right to bring it - normally final, and normally broader than people expect.
Representing Yourself (Pro Se)The right to conduct your own case without a lawyer - available in almost every civil court, and held to almost the same standards as a lawyer.
Res Judicata and Collateral Estoppel (Preclusion)The rules that stop a dispute from being litigated twice - claim preclusion, which bars a second suit on a claim that was or could have been decided, and issue preclusion, which bars re-arguing a specific issue actually decided, the elements of each, who is bound, the exceptions, and why "could have been raised" is the part that surprises people.
Service of ProcessThe formal delivery of court papers that gives a court power over the person sued - and the step whose failure undoes more judgments than any other.
Small Claims CourtA simplified court for lower-value disputes, designed to be used without a lawyer - and in some states lawyers are not allowed in it at all.
Statute of LimitationsA deadline, set by statute, after which a legal claim can no longer be brought at all.
SubpoenaA court-backed order to give evidence or hand over documents - enforceable against people who are not parties to the case at all.
Summary JudgmentA ruling that decides a case, or part of one, without a trial because the essential facts are not genuinely in dispute.

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Part of the LawyerLand plain-English legal glossary. Definitions are written from primary sources - statutes and court rules - and each entry states the authority it rests on, or says plainly when the doctrine is state law with no national rule.

If you cannot afford a lawyer, civil legal aid programs provide free help with many of these problems: civil legal aid programs by state.

Related free reference tools: statute of limitations for a personal-injury claim, by state, quoted from each state's official text - part of LawyerLand's legal reference tools.