Case law, also used interchangeably with
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
, is a
law that is based on
precedents, that is the
judicial decisions from previous cases, rather than law based on
constitutions,
statute
A statute is a law or formal written enactment of a legislature. Statutes typically declare, command or prohibit something. Statutes are distinguished from court law and unwritten law (also known as common law) in that they are the expressed wil ...
s, or
regulation
Regulation is the management of complex systems according to a set of rules and trends. In systems theory, these types of rules exist in various fields of biology and society, but the term has slightly different meanings according to context. Fo ...
s. Case law uses the detailed facts of a
legal case that have been resolved by
court
A court is an institution, often a government entity, with the authority to adjudicate legal disputes between Party (law), parties and Administration of justice, administer justice in Civil law (common law), civil, Criminal law, criminal, an ...
s or similar
tribunal
A tribunal, generally, is any person or institution with authority to judge, adjudicate on, or determine claims or disputes—whether or not it is called a tribunal in its title. For example, an advocate who appears before a court with a singl ...
s. These past decisions are called "case law", or precedent. ''Stare decisis''—a Latin phrase meaning "let the decision stand"—is the principle by which judges are bound to such past decisions, drawing on established judicial authority to formulate their positions.
These judicial interpretations are distinguished from
statutory law, which are codes enacted by
legislative bodies, and
regulatory law, which are established by executive agencies based on statutes. In some jurisdictions, case law can be applied to ongoing
adjudication; for example, criminal proceedings or family law.
In
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
countries (including the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
,
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
,
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
,
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
,
New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
,
South Africa
South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...
,
Singapore
Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...
,
Ireland
Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
,
India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
,
Pakistan
Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...
,
Bangladesh
Bangladesh, officially the People's Republic of Bangladesh, is a country in South Asia. It is the List of countries and dependencies by population, eighth-most populous country in the world and among the List of countries and dependencies by ...
,
Sri Lanka
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...
,
Nepal
Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked country in South Asia. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain. It borders the Tibet Autonomous Region of China Ch ...
,
Bhutan
Bhutan, officially the Kingdom of Bhutan, is a landlocked country in South Asia, in the Eastern Himalayas between China to the north and northwest and India to the south and southeast. With a population of over 727,145 and a territory of , ...
,
Israel
Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
and
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
), it is used for
judicial decisions of selected
appellate court
An appellate court, commonly called a court of appeal(s), appeal court, court of second instance or second instance court, is any court of law that is empowered to hear a case upon appeal from a trial court or other lower tribunal. Appel ...
s,
court
A court is an institution, often a government entity, with the authority to adjudicate legal disputes between Party (law), parties and Administration of justice, administer justice in Civil law (common law), civil, Criminal law, criminal, an ...
s of
first instance, agency tribunals, and other bodies discharging adjudicatory functions.
In common law systems

In the
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
tradition, courts decide the law applicable to a case by interpreting statutes and applying
precedents which record how and why prior
cases have been decided. Unlike most civil law systems, common law systems follow the doctrine of
stare decisis, by which most courts are bound by their own previous decisions in similar cases. According to stare decisis, all lower courts should make decisions consistent with the previous decisions of higher courts. For example, in England, the
High Court and the
Court of Appeal
An appellate court, commonly called a court of appeal(s), appeal court, court of second instance or second instance court, is any court of law that is empowered to Hearing (law), hear a Legal case, case upon appeal from a trial court or other ...
s are each bound by their own previous decisions, however, since the
Practice Statement 1966 the
Supreme Court of the United Kingdom can deviate from its earlier decisions, although in practice it rarely does. A notable example of when the court has overturned its precedent is the case of ''
R v Jogee'', where the Supreme Court of the United Kingdom ruled that it and the other courts of England and Wales had misapplied the law for nearly 30 years.
Generally speaking, higher courts do not have direct oversight over the lower
courts of record, in that they cannot reach out on their initiative (''sua sponte'') at any time to overrule judgments of the lower courts. Normally, the burden rests with litigants to appeal rulings (including those in clear violation of established case law) to the higher courts. If a judge acts against precedent, and the case is not
appealed, the decision will stand.
A lower court may not rule against a binding precedent, even if it feels that it is unjust; it may only express the hope that a higher court or the legislature will reform the rule in question. If the court believes that developments or trends in legal reasoning render the precedent unhelpful, and wishes to evade it and help the law evolve, it may either hold that the precedent is inconsistent with subsequent authority, or that it should be ''distinguished'' by some material difference between the facts of the cases; some jurisdictions allow for a judge to recommend that an appeal be carried out. If that judgment goes to appeal, the appellate court will have the opportunity to review both the precedent and the case under appeal, perhaps overruling the previous case law by setting a new precedent of higher authority. This may happen several times as the case works its way through successive appeals.
Lord Denning, first of the
High Court of Justice
The High Court of Justice in London, known properly as His Majesty's High Court of Justice in England, together with the Court of Appeal (England and Wales), Court of Appeal and the Crown Court, are the Courts of England and Wales, Senior Cour ...
, later of the
Court of Appeal
An appellate court, commonly called a court of appeal(s), appeal court, court of second instance or second instance court, is any court of law that is empowered to Hearing (law), hear a Legal case, case upon appeal from a trial court or other ...
, provided a famous example of this evolutionary process in his development of the concept of
estoppel starting in the ''
High Trees'' case.
How case law is made
The different roles of case law in civil and common law traditions create differences in the way that courts render decisions. Common law courts generally explain in detail the legal rationale behind their decisions, with citations of both legislation and previous relevant judgments, and often interpret the wider legal principles. The necessary analysis (called ''
ratio decidendi''), then constitutes a
precedent binding on other courts; further analyses not strictly necessary to the determination of the current case are called ''
obiter dicta'', which constitute
persuasive authority but are not technically binding. By contrast, decisions in civil law jurisdictions are generally shorter, referring only to
statute
A statute is a law or formal written enactment of a legislature. Statutes typically declare, command or prohibit something. Statutes are distinguished from court law and unwritten law (also known as common law) in that they are the expressed wil ...
s.
The reason for this difference is that these civil law jurisdictions adhere to a tradition that the reader should be able to deduce the logic from the decision and the statutes.
Some
pluralist systems, such as
Scots law
Scots law () is the List of country legal systems, legal system of Scotland. It is a hybrid or mixed legal system containing Civil law (legal system), civil law and common law elements, that traces its roots to a number of different histori ...
in
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
and types of civil law jurisdictions in
Quebec
Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...
and
Louisiana
Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...
, do not precisely fit into the dual common-civil law system classifications. These types of systems may have been heavily influenced by the
Anglo-American common law tradition; however, their substantive law is firmly rooted in the civil law tradition. Because of their position between the two main systems of law, these types of legal systems are sometimes referred to as mixed systems of law.
Law
professor
Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other tertiary education, post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin ...
s traditionally have played a much smaller role in developing case law in common law than professors in civil law. Because court decisions in civil law traditions are historically brief
and not formally amenable to establishing precedent, much of the exposition of the law in civil law traditions is done by academics rather than by judges; this is called
doctrine
Doctrine (from , meaning 'teaching, instruction') is a codification (law), codification of beliefs or a body of teacher, teachings or instructions, taught principles or positions, as the essence of teachings in a given branch of knowledge or in a ...
and may be published in treatises or in journals such as ''
Recueil Dalloz'' in France. Historically, common law courts relied little on legal scholarship; thus, at the turn of the twentieth century, it was very rare to see an academic writer quoted in a legal decision (except perhaps for the academic writings of prominent judges such as
Coke and
Blackstone). Today academic writers are often cited in legal argument and decisions as
persuasive authority; often, they are cited when judges are attempting to implement reasoning that other courts have not yet adopted, or when the judge believes the academic's restatement of the law is more compelling than can be found in case law. Thus common law systems are adopting one of the approaches long-held in civil law jurisdictions.
Judges may refer to various types of
persuasive authority to decide a case. Widely cited non-binding sources include legal
encyclopedia
An encyclopedia is a reference work or compendium providing summaries of knowledge, either general or special, in a particular field or discipline. Encyclopedias are divided into article (publishing), articles or entries that are arranged Alp ...
s such as ''
Corpus Juris Secundum'' and ''
Halsbury's Laws of England'', or the published work of the
Law Commission or the
American Law Institute. Some bodies are given statutory powers to issue guidance with persuasive authority or similar statutory effect, such as the
Highway Code.
In federal or multi-jurisdictional law systems there may exist conflicts between the various lower appellate courts. Sometimes these differences may not be resolved, and it may be necessary to distinguish how the law is applied in one
district, province, division or
appellate department. Usually, only an appeal accepted by the
court of last resort will resolve such differences and, for many reasons, such appeals are often not granted.
Any court may seek to distinguish the present case from that of a binding precedent, to reach a different conclusion. The validity of such a distinction may or may not be accepted on appeal of that judgment to a higher court. An appellate court may also decide on an entirely new and different analysis from that of junior courts, and may or may not be bound by its own previous decisions, or in any case, may distinguish them on the facts.
Where there are several members of a court deciding a case, there may be one or more judgments given (or reported). Only the reason for the decision of the majority can constitute a binding precedent, but all may be cited as persuasive, or their reasoning may be adopted in an argument. Apart from the rules of procedure for precedent, the weight given to any reported judgment may depend on the reputation of both the reporter and the judges.
Nordic nations
The legal systems of the
Nordic countries
The Nordic countries (also known as the Nordics or ''Norden''; ) are a geographical and cultural region in Northern Europe, as well as the Arctic Ocean, Arctic and Atlantic Ocean, North Atlantic oceans. It includes the sovereign states of Denm ...
are sometimes included among the civil law systems, but as a separate branch, and sometimes counted as separate from the civil law tradition. In
Sweden
Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...
, for instance, case law arguably plays a more important role than in some of the Continental codified law systems. The two highest courts, the
Supreme Court (''Högsta domstolen'') and the
Supreme Administrative Court (''Högsta förvaltningsdomstolen''), have the right to set precedent which is in practice (however not formally) binding on all future application of the law. Courts of appeal, both general courts (''hovrätter'') and administrative courts (''kammarrätter''), may also issue decisions that act as guides for the application of the law, but these decisions may be overturned by higher courts. Thus ''case law'' is used to determine the actual applicability and limits of a law and not, as in common law jurisdictions, the creation of law.
See also
*
Judicial activism
*
Legal opinion
*
Lists of case law
*
Precedent
References
External links
interactive database of European judgments of national courts in the EUQueensland Case LawQueensland Judgments reported and unreported case law
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