Civil Procedure & Evidence: How a Dispute Becomes a Case, and What Counts as Proof

Two neighbours fall out over a fence. One says the other built it three metres onto her land. The other says the surveyor drew the line wrong in 1998. Each is certain. In the story that matters, though, neither is a lawyer yet, and the real question is not who is right. It is: what has to happen before anyone with power will decide? Someone has to be given the dispute. Both sides have to be heard. Somebody has to find out what the land records say. And at the end, a judge must be convinced, to some degree, that one account is the better one.

That chain of steps is civil procedure, and the rules about what the judge may look at and how much it must believe are evidence. Law students sometimes find them the dullest part of the degree. Practising lawyers know that most cases are won or lost inside them.

This describes how legal systems work and isn't legal advice. Procedure differs by country, court and kind of case, and it changes. For a real dispute, ask a qualified lawyer or your local court's self-help service.

The common ground: a referee for private quarrels

Every society must give people a way to settle disputes other than force. The answer is the same everywhere: a neutral third party with power to decide and enforce. Then every system has to answer four questions. Who may bring a case and in which court? How are the facts found? How sure must the decider be? And how are the costs shared, since a system that no one can afford is no remedy at all?

Family	Who drives the case	How facts are found
United States	The parties. The Federal Rules of Civil Procedure (1938) govern federal courts; each state has its own rules.	Broad pre-trial discovery by the parties; a jury is available in many civil cases (Seventh Amendment in federal court).
England and Wales	The parties, supervised by judges using the Civil Procedure Rules (1998).	Disclosure of documents; mostly judge-alone trials today.
Latin America (Mexico, Argentina, Brazil, Chile, Colombia)	The judge directs the process under a national code; recent reforms have added oral hearings.	Written claim and defence, then the judge orders the evidence. Colombia's General Procedure Code (2012) and Brazil's Civil Procedure Code (2015) are modern examples.
Continental Europe (France, Germany, Spain; EU rules for cross-border cases)	The judge manages the case; parties still present arguments and name evidence.	The judge decides what evidence is needed. Parties produce their own documents; there is no US-style fishing for the other side's papers.

Notice what is shared: written pleadings, a right to be heard, and a reasoned judgment. The differences are about who does the digging and how much.

How a dispute becomes a case

Courts cannot decide everything. A claim gets in the door through jurisdiction, which has two faces: the power to hear this kind of dispute, and the power over this defendant. In the US, the Supreme Court's 1945 decision in International Shoe v. Washington said a state may hear a case against an out-of-state defendant who has "minimum contacts" with it. In the EU, the Brussels I Recast Regulation (1215/2012) takes a plainer default: sue the defendant in the courts of the country where they are domiciled, with listed exceptions such as contract performance. Civil-law countries generally follow some form of that domicile rule.

The claim must then be written down. In the US, a complaint must state facts that make the claim plausible, a standard fixed by Bell Atlantic v. Twombly (2007) and Ashcroft v. Iqbal (2009); a defendant can ask the judge to dismiss a claim that fails it. Civil-law systems also begin with a written claim, but the judge's focus is whether the claim fits a rule in the code.

Discovery or judge-led fact-finding: who does the digging?

The sharpest difference in the world's civil procedure is who finds the evidence. In the United States, after the complaint, each side may demand documents, written answers, and sworn testimony from the other side and from outsiders (depositions). The idea is that if both sides see everything before trial, cases settle on their merits and "trial by ambush" ends. Since December 2015 the federal rules limit discovery to what is "proportional to the needs of the case", because it was being used as a weapon: whoever can afford to bury the other in requests can force a settlement.

England and Wales has "disclosure", narrower and supervised by the judge from the start. Most of continental Europe and Latin America see US discovery as a private investigation conducted outside a judge's view; the party who relies on a fact must name and produce the evidence, and the judge may order specific documents, but not a general search of the other side's files. This clash is real: American court orders for evidence abroad regularly meet resistance from foreign courts and data-protection law.

With the defaults, half a million documents at 60 an hour is about 8,300 hours of reading, or roughly $830,000 at $100 an hour. That is why a threat of discovery can force a settlement, and why proportionality limits exist.

Burdens and standards of proof

Evidence settles facts, but never perfectly, so the law uses two dials. The burden of proof says who loses if the evidence is balanced: the person who asserts the fact. The standard of proof says how sure the judge must be. In US civil cases the usual standard is "preponderance of the evidence"; in England and Wales, the "balance of probabilities". Both mean, informally, "more likely than not". Some civil claims, like fraud allegations in some states or removing a parent's rights, need "clear and convincing evidence". In criminal cases the standard is higher: "beyond reasonable doubt", which the US Supreme Court held to be constitutionally required in In re Winship (1970). English judges tell juries to be "sure".

In France and many civil-law systems, criminal and civil judges decide according to intime conviction ("inner conviction"): the judges are asked to examine, in good conscience, what the evidence has done to their own reason, without a numerical test. German civil courts likewise evaluate evidence freely rather than counting it. Reformed criminal codes in Latin America have imported the language of "beyond reasonable doubt" (más allá de toda duda razonable). Courts almost never attach percentages to these standards; the thresholds below are rough illustrations only, and studies of judges and jurors give a wide range.

The dial means a 60% claim wins a civil case and loses a criminal one. It also means the claimant who has the burden loses at exactly 50-50: the system accepts that error on purpose, to force a choice.

Hearsay: why "I heard that…" is treated with suspicion

In the US, the hearsay rule excludes an out-of-court statement offered to prove that what it says is true (Federal Rule of Evidence 801(c)). The reason is practical: the speaker was not under oath, the jury cannot watch them, and the other side cannot cross-examine. The rule is full of exceptions (Rules 803 and 804 list excited utterances, business records and others) and exclusions (for example, a party's own statements used against that party). England and Wales largely abandoned it in civil cases in the Civil Evidence Act 1995, leaving hearsay to be judged on weight. Civil-law courts have no equivalent rule, because a professional judge, not a jury, is assumed able to discount weak evidence, but they prefer witnesses heard directly. In criminal cases across Europe, Article 6(3)(d) of the European Convention gives the accused a right to examine witnesses against them.

Settling, arbitrating, mediating, and getting to court at all

Most civil disputes never reach a judgment. Parties settle because trial is slow, costly and risky, and the rules about costs matter: in the US each side usually pays its own lawyer (the "American rule"), while in England and Wales and many civil-law countries the loser pays a share of the winner's costs. Two other routes leave the courts altogether. Arbitration hands the decision to a private decider the parties choose. It has enforcement behind it through the New York Convention of 1958, which about 172 states had joined as of January 2023, so an award made in one can be enforced in the others. Mediation keeps the decision with the parties, with a neutral helping them to find a deal. Brazil's 2015 code places a conciliation or mediation hearing early in ordinary cases; many systems encourage or require some attempt at it first.

With the defaults, a claimant expects $30,000 from going to court under the American rule and $36,000 under loser-pays. An offer of $35,000 is therefore worth taking in the first system and not in the second. The rule, not the facts, changed the answer.

There is also the question of who can reach a court at all. The World Justice Project estimates that about 5.1 billion people, roughly two-thirds of the world, lack meaningful access to justice. In the US, the Legal Services Corporation's 2022 report found that low-income Americans got no or too little legal help for 92% of the problems that substantially affected them in the past year. The scholars Mauro Cappelletti and Bryant Garth, in the Florence Access-to-Justice Project (1978), described three "waves" of reform: legal aid for the poor, procedures for group and public interests, and simpler, cheaper processes including mediation. The US Constitution guarantees a lawyer to a poor person charged with a crime (Gideon v. Wainwright, 1963) but, in general, not in a civil case (in Lassiter v. Department of Social Services, 1981, the Court held there is no automatic right to a lawyer even when a parent may lose a child).

What a graduate just sees

• Every dispute passes through the same gates: who can sue, where, and with what facts.
• Who digs for evidence, the parties or the judge, is the biggest difference between legal families.
• A burden says who loses a tie; a standard says how sure the judge must be.
• "More likely than not" is a rough dial, not a number a judge computes.
• Hearsay rules are about reliability and cross-examination, and many systems manage without them.
• Whether the loser pays costs changes which cases get filed and settled.
• A right with no affordable way to enforce it is a promise, not a right.

Where it shows up next

• Contracts & Obligations (35/04) and Torts & Civil Liability (35/05): every rule there is only as strong as the process that enforces it.
• Game Theory (34/45): settlement bargaining is a game in which each side's offer depends on its guess of the other's.
• International Law & Human Rights (35/10): the right to a fair hearing in Article 6 of the European Convention applies to civil disputes too.
• In the world: a landlord-tenant hearing, an international company choosing arbitration, a legal-aid clinic, a court that moves to oral hearings after a reform.

If you want to go deeper

• Standard textbooks: Stephen Yeazell and co-authors, Civil Procedure (a standard US casebook); Mueller and Kirkpatrick, Evidence (US). For the English system, Adrian Zuckerman, Zuckerman on Civil Procedure. Check for current editions.
• Comparative: Mirjan Damaška, Evidence Law Adrift (1997), on why common-law and continental systems treat evidence differently.
• Gentler: Jonathan Harr, A Civil Action (1995), a true story of a toxic-water lawsuit that shows discovery, burden of proof and settlement pressure at work.
• Free course: the Open University's OpenLearn unit Judicial decision making, adapted from its civil justice and tort law module.