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External WebsitesProfessor of Law, Harvard Law School, Cambridge, Massachusetts. Author of The Law of the Land: An Intellectual History of American Property Doctrine, 1776–1840 and others.
William Weston Fisher Fact-checked by The Editors of Encyclopaedia BritannicaEncyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
The Editors of Encyclopaedia Britannica Last Updated: Sep 3, 2024 • Article History Table of Contents Key People: Paul Romer (Show more) Related Topics: property law copyright copyleft (Show more)Ask the Chatbot a Question
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intellectual-property law, the legal regulations governing an individual’s or an organization’s right to control the use or dissemination of ideas or information. Various systems of legal rules exist that empower persons and organizations to exercise such control. Copyright law confers upon the creators of “original forms of expression” (e.g., books, movies, musical compositions, and works of art) exclusive rights to reproduce, adapt, and publicly perform their creations. Patent law enables the inventors of new products and processes to prevent others from making, using, or selling their inventions. Trademark law empowers the sellers of goods and services to apply distinctive words or symbols to their products and to prevent their competitors from using the same or confusingly similar insignia or phrasing. Finally, trade-secret law prohibits rival companies from making use of wrongfully obtained confidential commercially valuable information (e.g., soft-drink formulas or secret marketing strategies).
Until the middle of the 20th century, copyright, patent, trademark, and trade-secret law commonly were understood to be analogous but distinct. In most countries they were governed by different statutes and administered by disparate institutions, and few controversies involved more than one of these fields. It also was believed that each field advanced different social and economic goals. During the second half of the 20th century, however, the lines between these fields became blurred. Increasingly they were considered to be closely related, and eventually they became known collectively as “intellectual-property law.” Perceptions changed partly as a result of the fields’ seemingly inexorable growth, which frequently caused them to overlap in practice. In the 1970s, for example, copyright law was extended to provide protection to computer software. Later, during the 1980s and ’90s, courts in many countries ruled that software could also be protected through patent law. The result was that the developers of software programs could rely upon either or both fields of law to prevent consumers from copying programs and rivals from selling identical or closely similar programs.
Copyright, patent, trademark, and trade-secret law also have overlapped dramatically in the area of so-called “ industrial design,” which involves the creation of objects that are intended to be both useful and aesthetically pleasing. Contemporary culture is replete with examples of such objects—e.g., eyeglass frames, lamps, doorknobs, telephones, kitchen appliances, and automobile bodies. In many countries the work of the creators of these objects is protected by at least three systems of rules: copyright protection for “useful objects” (a variant of ordinary copyright law); design-patent law (a variant of ordinary patent law); and “trade-dress” doctrine (a variant of trademark law). These rules stop short of protecting “functional” features, which are understood to include the shapes of objects when those shapes are determined by the objects’ practical uses. Nevertheless, the rules combine to create strong impediments to the imitation of nonfunctional design features.
The integration of copyright, patent, trademark, and trade-secret law into an increasingly consolidated body of intellectual-property law was reinforced by the emergence in many jurisdictions of additional types of legal protection for ideas and information. One such protection is the “ right of publicity,” which was invented by courts in the United States to enable celebrities to prevent others from making commercial use of their images and identities. Similarly, the European Union has extended extensive protections to the creators of electronic databases. Computer chips, the shapes of boat hulls, and folklore also have been covered by intellectual-property protections.
In the 1990s the exclusive right to use Internet domain names—unique sequences of letters (divided, by convention, into segments separated by periods) that correspond to the numerical Internet Protocol (IP) addresses that identify each of the millions of computers connected to the Internet—became a highly contested issue. Domain-name labels enable “packets” of information transmitted over the Internet to be delivered to their intended destinations. The mnemonic character of domain names (e.g., http://www.britannica.com) also assists consumers in locating Internet-based businesses. As commercial activity on the Internet grew, evocative domain names became increasingly valuable, and struggles over them multiplied, especially as a result of the activities of so-called “cybersquatters,” who registered popular domain names with the aim of selling them to businesses at huge profits. The task of allocating domain names throughout the world and of resolving disputes over them has been largely assumed by a private organization, the Internet Corporation for Assigned Names and Numbers (ICANN). With the assistance of the World Intellectual Property Organization (WIPO), ICANN promulgated a Uniform-Domain-Name-Dispute-Resolution Policy to resolve domain-name controversies and has licensed several arbitration services to interpret and enforce it. In 1999 the United States established a similar national system, known as the Anticybersquatting Consumer Protection Act, which is administered by the federal courts. Under the law, individuals can be fined up to $100,000 for registering a domain name in “bad faith.” Defenders of the law contended that it was crucial to protect the commercial value of trademarks and to shield businesses from extortion. Critics argued that the legislation was too broad and could be used by companies to suppress consumer complaints, parody, and other forms of free speech.
The Agreement on Trade-Related Aspects of Intellectual Property Rights (commonly known as TRIPS) has contributed greatly to the expansion of intellectual-property law. Negotiated as part of the Uruguay Round (1986–94) of the General Agreement on Tariffs and Trade (GATT), the TRIPS Agreement obligates members of the World Trade Organization (WTO) to establish and enforce minimum levels of copyright, patent, and trademark protection within their jurisdictions. Countries that fail to do so are subject to various WTO-administered trade sanctions.