A license or licence is an official permission or permit to do, use, or own something.
An end-user license agreement (E.U.L.A.) is a legal contract entered into between a software developer or vendor and the user of the software, often where the software has been purchased by the user from an intermediary such as a retailer. A EULA specifies in detail the rights and restrictions which apply to the use of the software.
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 a 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.
Copyright misuse is an equitable defence to copyright infringement in the United States based upon the doctrine of unclean hands. The misuse doctrine provides that the copyright holder engaged in abusive or improper conduct in exploiting or enforcing the copyright will be precluded from enforcing his rights against the infringer. Copyright misuse is often comparable to and draws from the older and more established doctrine of patent misuse, which bars a patentee from obtaining relief for infringement when he extends his patent rights beyond the limited monopoly conferred by the law.
A software license is a legal instrument governing the use or redistribution of software. Under United States copyright law, all software is copyright protected, in both source code and object code forms, unless that software was developed by the United States Government, in which case it cannot be copyrighted. Authors of copyrighted software can donate their software to the public domain, in which case it is also not covered by copyright and, as a result, cannot be licensed.
The SCO–Linux disputes were a series of legal and public disputes between the software company SCO Group (SCO) and various Linux vendors and users. The SCO Group alleged that its license agreements with IBM meant that source code IBM wrote and donated to be incorporated into Linux was added in violation of SCO's contractual rights. Members of the Linux community disagreed with SCO's claims; IBM, Novell and Red Hat filed claims against SCO.
In United States patent law, patent misuse is a patent holder's use of a patent to restrain trade beyond enforcing the exclusive rights that a lawfully obtained patent provides. If a court finds that a patent holder committed patent misuse, the court may rule that the patent holder has lost the right to enforce the patent. Patent misuse that restrains economic competition substantially can also violate United States antitrust law.
Vault Corporation v Quaid Software Ltd. 847 F.2d 255 is a case heard by the United States Court of Appeals for the Fifth Circuit that tested the extent of software copyright. The court held that making RAM copies as an essential step in utilizing software was permissible under §117 of the Copyright Act even if they are used for a purpose that the copyright holder did not intend. It also applied the "substantial noninfringing uses" test from Sony Corp. of America v. Universal City Studios, Inc. to hold that Quaid's software, which defeated Vault's copy protection mechanism, did not make Quaid liable for contributory infringement. It held that Quaid's software was not a derivative work of Vault's software, despite having approximately 30 characters of source code in common. Finally, it held that the Louisiana Software License Enforcement Act clause permitting a copyright holder to prohibit software decompilation or disassembly was preempted by the Copyright Act, and was therefore unenforceable.
Jacobsen v. Katzer was a lawsuit between Robert Jacobsen (plaintiff) and Matthew Katzer (defendant), filed March 13, 2006 in the United States District Court for the Northern District of California. The case addressed claims on copyright, patent invalidity, cybersquatting, and Digital Millennium Copyright Act issues arising from Jacobsen under an open source license developing control software for model trains.
Copyright infringement is the use of works protected by copyright without permission for a usage where such permission is required, thereby infringing certain exclusive rights granted to the copyright holder, such as the right to reproduce, distribute, display or perform the protected work, or to make derivative works. The copyright holder is typically the work's creator, or a publisher or other business to whom copyright has been assigned. Copyright holders routinely invoke legal and technological measures to prevent and penalize copyright infringement.
Bowers v. Baystate Technologies, 320 F.3d 1317, was a U.S. Court of Appeals Federal Circuit case involving Harold L. Bowers and Baystate Technologies over patent infringement, copyright infringement, and breach of contract. In the case, the court found that Baystate had breached their contract by reverse engineering Bower's program, something expressly prohibited by a shrink wrap license that Baystate entered into upon purchasing a copy of Bower's software. This case is notable for establishing that license agreements can preempt fair use rights as well as expand the rights of copyright holders beyond those codified in US federal law.
Typefaces, fonts, and their glyphs raise intellectual property considerations in copyright, trademark, design patent, and related laws. The copyright status of a typeface—and any font file that describes it digitally—varies between jurisdictions. In the United States, the shapes of typefaces are not eligible for copyright, though the shapes may be protected by design patent. Typefaces can be protected in other countries, including the UK, Germany, and France, by industrial design protections that are similar to copyright or design patent in that they protect the abstract shapes. Additionally, in the US and in some other countries, computer fonts—the digital instantiation of the shapes as vector outlines—may be protected by copyright on the computer code that produces them. The name of a typeface may also be protected as a trademark.
Google LLC v. Oracle America, Inc., 593 U.S. ___ (2021), was a U.S. Supreme Court decision related to the nature of computer code and copyright law. The dispute centered on the use of parts of the Java programming language's application programming interfaces (APIs) and about 11,000 lines of source code, which are owned by Oracle, within early versions of the Android operating system by Google. Google has since transitioned Android to a copyright-unburdened engine without the source code, and has admitted to using the APIs but claimed this was within fair use.
Atari Games Corp. v. Nintendo of America Inc., 975 F.2d 832, is a United States Court of Appeals for the Federal Circuit case, in which the court held that Atari Games engaged in copyright infringement by copying Nintendo's lock-out system, the 10NES. The 10NES was designed to prevent Nintendo's video game console, the Nintendo Entertainment System (NES), from accepting unauthorized game cartridges. Atari, after unsuccessful attempts to reverse engineer the lock-out system, obtained an unauthorized copy of the source code from the Copyright Office and used it to create its 10NES replica, the Rabbit. The case involved copyright infringement claims by Nintendo and a defense based on fair use and copyright misuse by Atari.
Morton Salt Co. v. G.S. Suppiger Co., 314 U.S. 488 (1942), is a patent misuse decision of the United States Supreme Court. It was the first case in which the Court expressly labeled as "misuse" the Motion Picture Patent/Carbice tie-in defense to a charge of patent infringement and created the present blanket remedy in infringement cases of unenforceability of the misused patent. The decision re-emphasized that misuse can be found without finding an antitrust violation.
Motion Picture Patents Co. v. Universal Film Mfg. Co., 243 U.S. 502 (1917), is United States Supreme Court decision that is notable as an early example of the patent misuse doctrine. It held that, because a patent grant is limited to the invention described in the claims of the patent, the patent law does not empower the patent owner, by notices attached to the patented article, to extend the scope of the patent monopoly by restricting the use of the patented article to materials necessary for their operation but forming no part of the patented invention, or to place downstream restrictions on the articles making them subject to conditions as to use. The decision overruled The Button-Fastener Case, and Henry v. A.B. Dick Co., which had held such restrictive notices effective and enforceable.
Princo Corp. v. ITC, 616 F.3d 1318 was a 2010 decision of the United States Court of Appeals for the Federal Circuit, that sought to narrow the defense of patent misuse to claims for patent infringement. Princo held that a party asserting the defense of patent misuse, absent a case of so-called per se misuse, must prove both "leveraging" of the patent being enforced against it and a substantial anticompetitive effect outside the legitimate scope of that patent right. In so ruling, the court emphasized that the misuse alleged must involve the patent in suit, not another patent.
National Lockwasher Co. v. George K. Garrett Co., 137 F.2d 255, is one of the earliest or the earliest federal court decision to hold that it is patent misuse for a patentee to require licensees not to use a competitive technology. Such provisions are known as "tie-outs."
Free and open source software (FOSS) is distributed under a variety of free-software licenses. These licenses differ significantly from other kinds of software licenses. Legal action against open source licenses involves questions about their validity and enforceability.
