The courts enforce statutes and interpret them. They also invalidate unconstitutional statutes, and make law in areas not covered by statutes. Here are some examples of the four main roles played by our courts:
Enforcement The Copyright Act gives a copyright owner the exclusive right to reproduce the owner's work. A copyright infringement suit is an example of court enforcement of a statute. (Copyright infringement is discussed in "Infringement," in the Copyright Law Summary )
Interpretation .According to the Copyright Act, the copyright in a work created by an employee within the scope of his or her employment is owned by the employer. The Copyright Act does not define the term "employee." The Supreme Court case that defines the term is an example of court interpretation of a statute. (That case is discussed in the "The Work Made for Hire Rule" in the Ownership of Copyrights Summary )
Invalidation . The courts invalidate unconstitutional laws. Unconstitutional laws are laws that conflict with provisions of the Constitution. The Constitution is the supreme law of the United States. Many "constitutionality" cases involve claims that a law violates the Constitution's Bill of Rights (the first ten amendments). In Roe v. Wade , the Supreme Court invalidated a state statute restricting women's access to abortion. According to the Court, the statute violated a pregnant woman's constitutional right of privacy.
Making Law . The courts create the law for "common law" subject areas. Common law covers areas not covered by statutes. In many states, for example, individuals' rights of privacy and publicity are protected under common law rather than under statutory laws.
Types of Courts
There are several types of courts. The federal and state court systems consist of two levels of courts: Trial courts and appellate courts. Cases are tried in trial courts. Appellate courts review the decisions of the trial courts. (Appellate and trial courts are discussed in "Civil Lawsuits," later in this summary.)
The federal court system is divided into 13 judicial circuits. Eleven of the circuits are numbered. Each of the numbered circuits contains more than one state. The Ninth Circuit, for example, covers California, Oregon, Washington, Idaho, Nevada, Arizona, Alaska, and Hawaii. The 12th and 13th circuits are the District of Columbia Circuit and the Federal Circuit. The Federal Circuit handles appeals in patent cases and Claims Court cases.
Each federal circuit has one appellate court. These courts are known as Courts of Appeals or Circuit Courts. The Supreme Court reviews the decisions of the Courts of Appeals.
Each federal circuit is divided into judicial districts. A district can be as small as one city or as large as an entire state. The trial courts are known as the United States District Courts.
Jurisdiction
The federal courts have jurisdiction over cases involving federal statutes (the Copyright Act, for example) and other "federal questions." They also have jurisdiction over cases in which the party filing the suit and the party being sued reside in different states. This type of federal jurisdiction is known as "diversity" jurisdiction.
Civil and Criminal Cases
A criminal case is brought by the federal government or a state to prosecute a defendant (the party sued) for violations of the government's criminal laws. Murder and burglary are examples of violations of criminal laws. If the defendant in a criminal case is found guilty by the jury, he or she is sentenced by the court to serve a jail sentence or pay a fine as punishment for the crime.
A civil case is a case brought by one party (the "plaintiff") against another party (the "defendant") to resolve a legal dispute involving rights based on statutory law or common law. A copyright infringement case is an example of a civil case involving statutory law. A suit seeking damages for a writer's breach of a contract (in which the writer promised to create a script for a movie but failed to do so) is an example of a civil case involving common law rights. (Breach of contract is discussed in "What Is a Contract?," the Contracts Law Summary )
While certain violations of the Copyright Act and the Lanham Act (the federal trademark statute) are criminal violations, multimedia developers and publishers will be concerned primarily with civil cases.

