Copyright is a legal concept that is part of the intellectual property area of law, historically known from common law systems of various jurisdictions. It gives the creator of an original work, or another owner of the right, the exclusive, legally secured right to copy, distribute, adapt, display, and perform a creative work, usually for a limited time. The creative work may be in a literary, artistic, educational, or musical form. Copyright is intended to protect the original expression of an idea in the form of a creative work, but not the idea itself. A copyright is subject to limitations based on public interest considerations, such as the fair use doctrine in the United States.
The idea–expression distinction or idea–expression dichotomy is a legal doctrine in the United States that limits the scope of copyright protection by differentiating an idea from the expression or manifestation of that idea.
Apple Computer, Inc. v. Microsoft Corporation, 35 F.3d 1435, was a copyright infringement lawsuit in which Apple Computer, Inc. sought to prevent Microsoft and Hewlett-Packard from using visual graphical user interface (GUI) elements that were similar to those in Apple's Lisa and Macintosh operating systems. The court ruled that, "Apple cannot get patent-like protection for the idea of a graphical user interface, or the idea of a desktop metaphor [under copyright law]...". In the midst of the Apple v. Microsoft lawsuit, Xerox also sued Apple alleging that Mac's GUI was heavily based on Xerox's. The district court dismissed Xerox's claims without addressing whether Apple's GUI infringed Xerox's. Apple lost all claims in the Microsoft suit except for the ruling that the trash can icon and folder icons from Hewlett-Packard's NewWave windows application were infringing. The lawsuit was filed in 1988 and lasted four years; the decision was affirmed on appeal in 1994, and Apple's appeal to the U.S. Supreme Court was denied.
Bauer & Cie. v. O'Donnell, 229 U.S. 1 (1913), was a 1913 United States Supreme Court decision involving whether a purchaser of a patented product bearing a price-fixing notice incurs guilt of patent infringement by reselling the product at a price lower than that which the notice commands. A divided Court (5–4) held that it was not.
The first-sale doctrine is an American legal concept that limits the rights of an intellectual property owner to control resale of products embodying its intellectual property. The doctrine enables the distribution chain of copyrighted products, library lending, giving, video rentals and secondary markets for copyrighted works. In trademark law, this same doctrine enables reselling of trademarked products after the trademark holder puts the products on the market. In the case of patented products, the doctrine allows resale of patented products without any control from the patent holder. The first sale doctrine does not apply to patented processes, which are instead governed by the patent exhaustion doctrine.
Software copyright is the application of copyright in law to machine-readable software. While many of the legal principles and policy debates concerning software copyright have close parallels in other domains of copyright law, there are a number of distinctive issues that arise with software. This article primarily focuses on topics particular to software.
The software patent debate is the argument about the extent to which, as a matter of public policy, it should be possible to patent software and computer-implemented inventions. Policy debate on software patents has been active for years. The opponents to software patents have gained more visibility with fewer resources through the years than their pro-patent opponents. Arguments and critiques have been focused mostly on the economic consequences of software patents.
Computer Associates International, Inc. v. Altai, Inc., 982 F.2d 693 is a decision from the United States Court of Appeals for the Second Circuit that addressed to what extent non-literal elements of software are protected by copyright law. The court used and recommended a three-step process called the Abstraction-Filtration-Comparison test. The case was an appeal from the United States District Court for the Eastern District of New York in which the district court found that defendant Altai's OSCAR 3.4 computer program had infringed plaintiff Computer Associates' copyrighted computer program entitled CA-SCHEDULER. The district court also found that Altai's OSCAR 3.5 program was not substantially similar to a portion of CA-SCHEDULER 7.0 called SYSTEM ADAPTER, and thus denied relief as to OSCAR 3.5. Finally, the district court concluded that Computer Associates' state law trade secret misappropriation claim against Altai was preempted by the federal Copyright Act. The appeal was heard by Judges Frank Altimari, John Daniel Mahoney, and John M. Walker, Jr. The majority opinion was written by Judge Walker. Judge Altimari concurred in part and dissented in part. The Second Circuit affirmed the district court's ruling as to copyright infringement, but vacated and remanded its holding on trade secret preemption.
Gottschalk v. Benson, 409 U.S. 63 (1972), was a United States Supreme Court case in which the Court ruled that a process claim directed to a numerical algorithm, as such, was not patentable because "the patent would wholly pre-empt the mathematical formula and in practical effect would be a patent on the algorithm itself." That would be tantamount to allowing a patent on an abstract idea, contrary to precedent dating back to the middle of the 19th century. The ruling stated "Direct attempts to patent programs have been rejected [and] indirect attempts to obtain patents and avoid the rejection ... have confused the issue further and should not be permitted." The case was argued on October 16, 1972, and was decided November 20, 1972.
In copyright law, a derivative work is an expressive creation that includes major copyrightable elements of a first, previously created original work. The derivative work becomes a second, separate work independent from the first. The transformation, modification or adaptation of the work must be substantial and bear its author's personality sufficiently to be original and thus protected by copyright. Translations, cinematic adaptations and musical arrangements are common types of derivative works.
The public domain (PD) consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. Because no one holds the exclusive rights, anyone can legally use or reference those works without permission.
The copyright law of the United States grants monopoly protection for "original works of authorship". With the stated purpose to promote art and culture, copyright law assigns a set of exclusive rights to authors: to make and sell copies of their works, to create derivative works, and to perform or display their works publicly. These exclusive rights are subject to a time and generally expire 70 years after the author's death or 95 years after publication. In the United States, works published before January 1, 1928, are in the public domain.
Bonito Boats, Inc. v. Thunder Craft Boats, Inc., 489 U.S. 141 (1989), is a decision of the United States Supreme Court holding a state anti-plug molding law preempted because it partially duplicated and therefore interfered with the balance Congress had struck by federal patent law. The decision reaffirmed the Supreme Court's earlier decision in Sears, Roebuck & Co. v. Stiffel Co. (1964), which held a state unfair competition law preempted on the same ground.
The Abstraction-Filtration-Comparison test (AFC) is a method of identifying substantial similarity for the purposes of applying copyright law. In particular, the AFC test is used to determine whether non-literal elements of a computer program have been copied by comparing the protectable elements of two programs. The AFC test was developed by the United States Court of Appeals for the Second Circuit in 1992 in its opinion for Computer Associates Int. Inc. v. Altai Inc. It has been widely adopted by United States courts and recognized by courts outside the United States as well.
Lasercomb America, Inc. v. Reynolds, 911 F.2d 970 is an appeal filed in the United States Court of Appeals for the Fourth Circuit. Initially, Lasercomb filed an action against Holiday Steel for breach of contract, copyright infringement, misappropriation of trade secrets, fraud, unfair competition, and false designation of origin. The United States District Court ruled in favor of Lasercomb, awarding them punitive damages and actual damages for fraud, rejecting the defense of copyright misuse. On appeal, based on a recognition of the similarity to patent misuse, the holding was reversed, deeming the language contained in the license agreement unreasonable.
Paraphrasing of copyrighted material may, under certain circumstances, constitute copyright infringement. In most countries that have national copyright laws, copyright applies to the original expression in a work rather than to the meanings or ideas being expressed. Whether a paraphrase is an infringement of expression, or a permissible restatement of an idea, is not a binary question but a matter of degree. Copyright law in common law countries tries to avoid theoretical discussion of the nature of ideas and expression such as this, taking a more pragmatic view of what is called the idea/expression dichotomy. The acceptable degree of difference between a prior work and a paraphrase depends on a variety of factors and ultimately depends on the judgement of the court in each individual case.
Veeck v. Southern Bldg. Code Congress Int'l, Inc., 293 F.3d 791, was a 2002 en banc 9-6 decision of the United States Court of Appeals for the Fifth Circuit, about the scope of copyright protection for building codes and by implication other privately drafted laws adopted by states and municipal governments. A three-fifths majority of the court's fifteen judges held that copyright protection no longer applied to model codes once they were enacted into law.
Evans v. Jordan, 13 U.S. 199 (1815), was a United States Supreme Court case in which the Court held that someone who had copied a patented invention after the patent had expired, and before the patent was restored by a private bill, would be liable for damages for patent infringement for any use continuing after the patent was restored. It was the second published Supreme Court decision on patent law, and the first of four Supreme Court cases dealing with the Oliver Evans flour mill patent. Like other Supreme Court patent cases prior to Evans v. Eaton, however, this case did not deal with substantive patent law, but only with issues of statutory construction and infringement liability.
Evans v. Eaton, 20 U.S. 356 (1822), was a United States Supreme Court case in which the Court held, chiefly, that a patent on an improved machine must clearly describe how the machine differs from the prior art.
