
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It is a system of law that relies on detailed records of similar situations and statutes, as there is no official legal code that can be applied to a case. Common law is used in several countries, including the United States, the United Kingdom, Canada, Australia, and India. While common law is typically applied in civil cases, it is also used in criminal cases in some countries. For example, Canadian criminal law uses a common law system in all provinces, and in the United Kingdom, the Supreme Court has the authority to overrule and unify criminal law decisions of lower courts in England, Wales, and Northern Ireland.
| Characteristics | Values |
|---|---|
| Definition | Common law is a body of unwritten laws based on legal precedents established by the courts. |
| Other Names | Case law |
| Basis | Precedents, legal principles, and caselaw |
| Sources | Institutionalized opinions and interpretations from judicial authorities and public juries |
| Application | Common law influences decision-making in unusual cases where existing statutes or written rules of law are insufficient. |
| Objective | Establish consistent outcomes by applying the same standards of interpretation. |
| Usage | Used in criminal law in common-law countries, including the United Kingdom and the United States. |
| Variability | Elements of common law may differ between districts and jurisdictions. |
| Advantages | Stability and consistency in the legal system |
| Disadvantages | May lead to the marginalization or disempowerment of certain groups due to outdated or biased precedents. |
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What You'll Learn

Common law is used in Canada for criminal cases
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law is used in Canada for criminal cases, as Canada follows a common law system.
Canada is a federation – a union of several provinces and territories with a central government. It has a federal parliament in Ottawa that makes laws for the entire country, and a legislature in each of the ten provinces and three territories that deals with laws in their areas. Laws enacted at either level are called statutes, legislation, or acts. When Parliament or a provincial or territorial legislature passes a statute, it takes the place of common law or precedents dealing with the same subject.
Canadian federal courts operate under a separate system throughout Canada and deal with a narrower range of subject matter than superior courts in each province and territory. They only hear cases on subjects assigned to them by federal statutes, such as immigration, intellectual property, judicial review of federal government decisions, and admiralty. The Federal Court of Appeal is the appellate court for federal courts and hears cases in multiple cities. Unlike the United States, the Canadian Federal Court of Appeal is not divided into appellate circuits. Canadian federal statutes must use the terminology of both common law and civil law for civil matters, a system referred to as legislative bijuralism.
Criminal law in Canada is uniform throughout the country and is based on the federal statutory Criminal Code, which details both substantive and procedural law. Canadian criminal law uses a common law system no matter which province a case proceeds in. The administration of justice is the responsibility of the provinces.
Common law influences the decision-making process in unusual cases where the outcome cannot be determined based on existing statutes or written rules of law. It promotes stability and consistency in the legal justice system. The principle of stare decisis, a Latin phrase that roughly translates to "to stand by things decided," is central to common law. It means that courts and judges need to follow earlier decisions and rulings or case law when dealing with similar cases later.
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Common law is used in the UK for criminal cases
Common law is a body of unwritten laws based on legal precedents established by the courts. It is deeply rooted in the principle of stare decisis, which means "to stand by things decided". In other words, common law relies on detailed records of similar situations and statutes because there is no official legal code that can be applied to a case. The presiding judge determines which precedents to apply when deciding on each new case.
Common law offences are crimes under English criminal law and the criminal law of some Commonwealth countries. They are offences developed entirely by the law courts, with no specific basis in statute. In England and Wales, the Law Commission's programme of codification of criminal law included the aim of abolishing all remaining common law offences and replacing them with offences precisely defined by statute. This was due to common law offences being considered unacceptably vague and open to development by the courts in ways that might offend the principle of certainty. However, as the Law Commission and UK Parliament have not completed the necessary revisions, some common law offences still exist in England and Wales.
While the UK and the US share similarities in their common law systems, there are also differences in their criminal law procedures. For instance, the UK allows the use of evidence found by unlawful means, such as searching a house without a warrant, whereas the US does not. Additionally, the US has expanded its search and surveillance powers to include limited monitoring of telephone and electronic communications without probable cause.
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Common law is used in the US for criminal cases
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law influences the decision-making process in unusual cases where the outcome cannot be determined based on existing statutes or written rules of law.
In the US, common law promotes stability and consistency in the legal justice system. This is because everyone involved knows that the ultimate outcome will be based on previous caselaw and not on subjective, personal viewpoints. The principle of stare decisis, a Latin phrase that roughly means "to stand by things decided," is central to common law. Judges are required to follow earlier decisions and rulings when dealing with similar cases later.
In the context of criminal law, the substance of the law is much the same throughout common-law countries, including the United States. During the 20th century, undesirable behavior was thought to be eliminated by rigorous law enforcement, leading to the criminalization of personal behaviors such as some sexual practices, gambling, and the use of alcohol and drugs.
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Common law is used in Nicaragua for criminal cases
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law is used in several countries, including the United States, Australia, Canada, India, and the United Kingdom.
In Nicaragua, the legal system is a mixture of English common law and civil law. While there is limited information specifically on the use of common law in criminal cases in Nicaragua, the country has a Code of Criminal Procedure (Código de Procedimiento Penal) that has been in force since 2001. This code establishes an accusatory system similar to the US system, which is based on common law.
The Nicaraguan legal system has also adapted its codes to reflect social changes and modernise its laws. For example, the Penal Code (Código Penal), in force since 1974, establishes criminal misdemeanours and offenses punishable by law. Complementary laws have been enacted to address issues such as money laundering, drug control, environmental offenses, and firearms.
Additionally, Nicaragua has laws in place to address specific criminal matters. For instance, libel and slander laws impose fines ranging from 120 to 300 times the minimum daily wage for such offenses. The country also has laws criminalizing rape, domestic violence, and cybercrimes, demonstrating an application of legal principles in criminal cases.
While the influence of common law in Nicaragua's criminal cases may not be explicitly stated, the country's legal system appears to incorporate aspects of both common law and civil law traditions, adapting them to suit the social and cultural context of the nation.
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Common law is based on legal precedents
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law is used in several countries, including the United States, the United Kingdom, Canada, Australia, India, and New Zealand.
In a common law legal system, finding relevant case law is essential to success. Common law relies on detailed records of similar situations and statutes because there is no official legal code that can be directly applied to a case. The judge presiding over a case determines which precedents apply to that particular case. The decisions made by higher courts are typically binding on lower courts, promoting stability and consistency in the legal system. However, lower courts can deviate from precedents if they are outdated or if the current case is substantially different.
The principle of stare decisis, a Latin phrase meaning "to stand by things decided," is central to common law. Stare decisis dictates that courts and judges must follow earlier decisions and rulings when dealing with similar cases. This means that prior court decisions interpreting a statute become precedent and are therefore binding. This is in contrast to civil law systems, where a judge's decision is not binding in subsequent cases with different parties, even if the facts are similar.
While common law is primarily used in civil cases, it is also applied in criminal law in some countries. For example, Canadian criminal law uses a common law system across all provinces. In the United Kingdom and the United States, common law has influenced the criminalization of certain personal behaviours, such as some sexual practices, gambling, and the use of alcohol and drugs. However, it is important to note that the procedural aspects of criminal law may differ, with some countries, like Canada, having a uniform criminal code that outlines both the substance and procedure of criminal law.
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Frequently asked questions
Common law is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law is also known as case law.
Common law is used in criminal cases in the United Kingdom, the United States, Canada, Australia, India, New Zealand, and Hong Kong.
Civil law is a comprehensive, codified set of legal statutes created by legislators. It has clear rules for how judges need to rule for many specific disputes. Common law, on the other hand, relies on detailed records of similar situations and statutes because there is no official legal code that can be applied to a case at hand.








































