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<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="ROBOTS" content="NOODP" /> <title>Patent :: Topics :: Lumen</title> <link rel="stylesheet" href="/assets/application-edf3ba94297288ba21dcd7d7f08d7b53fed070a91204df553802ab78eb5b7a75.css" media="all" /> <meta name="csrf-param" content="authenticity_token" /> <meta name="csrf-token" content="eGPTJAxpOtTj4uy9mdRQXBAQ9mY4BRzyoMAJYWNfL_57fUcqj3_1E3tt9tb73-ClDLe3vLRuIfSVlsK0bO0GoQ" /> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="shortcut icon" href="/favicon.ico">  </head> <body class="topics topics-show"> <div id="flash"> </div> <header class="app"> <div class="nav-wrapper"> <div> <a id="root" href="/"> <img src="/assets/logo_2x-4827576148b1dd2ca23c3cd316e93121ad0364ce6722fe7e70cd2927b200249a.png" width="265" height="64" /> </a> </div> <div class="flex-end"> <nav class="main-nav"> <div class="nav-item search"><a href="/">Search</a></div> <div class="nav-item topics dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown">Topics</a> <div id="dropdown-topics" class="dropdown-menu" role="menu"> <ol> <li class="dropdown-submenu"> <a href="/topics/5">Copyright</a> <ol class="dropdown-menu"> <li class="title">Subtopics</li> <li class=""> <a href="/topics/12">Anticircumvention (DMCA)</a> </li> <li class=""> <a href="/topics/22">Copyright and Fair Use</a> </li> <li class=""> <a href="/topics/16">Derivative Works</a> </li> <li class=""> <a href="/topics/29">DMCA Notices</a> </li> <li class=""> <a href="/topics/14">DMCA Safe Harbor</a> </li> <li class=""> <a href="/topics/25">DMCA Subpoenas</a> </li> <li class=""> <a href="/topics/11">Piracy or Copyright Infringement</a> </li> <li class=""> <a href="/topics/15">Reverse Engineering</a> </li> </ol> </li> <li class=""> <a href="/topics/40">Counterfeit</a> </li> <li class=""> <a href="/topics/28">Court Orders</a> </li> <li class=""> <a href="/topics/8">Defamation</a> </li> <li class="dropdown-submenu"> <a href="/topics/34">EU - Right to Be Forgotten</a> <ol class="dropdown-menu"> <li class="title">Subtopics</li> <li class=""> <a href="/topics/36"> El Derecho Al Olvido</a> </li> <li class=""> <a href="/topics/37">O Pravu Osobe Da Bude Zaboravljena?</a> </li> <li class=""> <a href="/topics/35">"Recht auf Vergessen" </a> </li> <li class=""> <a href="/topics/38">Recht Om Vergeten Te Worden</a> </li> <li class=""> <a href="/topics/39">锌褉邪胁芯褌芯写邪斜褗写械褕蟹邪斜褉邪胁械薪</a> </li> </ol> </li> <li class=""> <a href="/topics/3">Fan Fiction</a> </li> <li class=""> <a href="/topics/33">Government Requests</a> </li> <li class=""> <a href="/topics/26">International</a> </li> <li class=""> <a href="/topics/13">John Doe Anonymity</a> </li> <li class=""> <a href="/topics/32">Law Enforcement Requests</a> </li> <li class=""> <a href="/topics/18">Linking</a> </li> <li class=""> <a href="/topics/1">Lumen</a> </li> <li class=""> <a href="/topics/30">No Action</a> </li> <li class="dropdown-submenu"> <a href="/topics/20">Patent</a> <ol class="dropdown-menu"> <li class="title">Subtopics</li> <li class=""> <a href="/topics/24">E-Commerce Patents</a> </li> </ol> </li> <li class=""> <a href="/topics/21">Responses</a> </li> <li class=""> <a href="/topics/31">Right of Publicity</a> </li> <li class="dropdown-submenu"> <a href="/topics/6">Trademark</a> <ol class="dropdown-menu"> <li class="title">Subtopics</li> <li class="dropdown-submenu"> <a href="/topics/2">Domain Names and Trademarks</a> <ol class="dropdown-menu"> <li class="title">Subtopics</li> <li class=""> <a href="/topics/10">ACPA</a> </li> <li class=""> <a href="/topics/19">Documenting Your Domain Defense</a> </li> <li class=""> <a href="/topics/9">UDRP</a> </li> </ol> </li> <li class=""> <a href="/topics/17">Protest, Parody and Criticism Sites</a> </li> </ol> </li> <li class=""> <a href="/topics/23">Trade Secret</a> </li> <li class=""> <a href="/topics/27">Uncategorized</a> </li> </ol> </div> </div> <div class="nav-item"> <a href="/media_mentions/search">Research and Media Mentions</a> </div> <div class="nav-item"> <a href="/pages/about">About</a> </div> </nav> </div> </div> <div class="container header-bar"> <h2>Topics</h2> </div> </header> <section class="main app"> <div class="main-inner"> <section class="topic-description"> <h1>Patent</h1> <article> <p><p>Patent law in the United States extends to virtually "anything under the sun that is made by man." Patents create a form of property right in new, unobvious, and useful inventions, including machines, devices, chemical compositions, and manufacturing processes. Software can also be protected by patent law. Indeed, the 1990s saw an explosion in the number of software patents issued by the United States Patent and Trademark Office. </p> <p>In this section, you can find information about what patents are, what rights they confer on the patent owner, the requirements for obtaining a patent, the activities that may constitute patent infringement, and possible defenses to a patent infringement claim. This section also contains specific information about patents on computer technologies and so-called "business method" patents. Note that computer software may be protected by <a href="./5">copyright</a> as well as patent law.</p> <p>The <a href="./24">E-Commerce Patents</a> subtopic focuses on patents targeting "e-commerce," including business methods and Internet display and delivery.</p> </p> </article> </section> <section class="topic-notices"> <h4>Recent Notices</h4> <ol> <li class="notice"> <a href="/notices/16377629">Court Order Complaint to Google</a> </li> <li class="notice"> <a href="/notices/13428794">fack</a> </li> <li class="notice"> <a href="/notices/12971136">Angel.co Ibidgames Takedown</a> </li> <li class="notice"> <a href="/notices/11952232">Adriane Pabon</a> </li> <li class="notice"> <a href="/notices/10531288">Cease and Desist Demand regarding Trademarks and Copyrights</a> </li> <li class="notice"> <a href="/notices/10510974">undesirable terrorist page</a> </li> <li class="notice"> <a href="/notices/10477095">GA ANDERSON</a> </li> <li class="notice"> <a href="/notices/10477096">GA ANDERSON</a> </li> <li class="notice"> <a href="/notices/10353767">xoa</a> </li> <li class="notice"> <a href="/notices/10353799">xoa</a> </li> </ol> </section> <section class="topic-faqs" id="topic-faqs"> <h3 class="title">Frequently Asked Questions</h3> <div class="wrapper"> <article> <div class="question">What is intellectual property?</div> <div class="answer"><p>Intellectual property consists of property created through human creativity. It includes, for example, literature, the visual arts, music, drama, compilations of useful information, computer programs, biotechnology, electronics, mechanics, chemistry, product design, and trade identity symbols. Intellectual property law is designed to promote human creativity without excessively restricting dissemination of the fruits of such creativity. Intellectual property rights are embodied in patents, trade secrets, copyrights, and trademarks.</p> </div> </article> <article> <div class="question">What is a patent?</div> <div class="answer"><p>A patent is a form of intellectual property. A U.S. patent is a right granted by the United States Patent and Trademark Office to an inventor to exclude others from making, using, selling, offering for sale, or importing an invention for a limited time. In the U.S., Patent law is driven by the language of the Patent Act, 35 U.S.C. </p> </div> </article> <article> <div class="question">What can be patented? </div> <div class="answer"><p>[not yet answered]</p> </div> </article> <article> <div class="question">What may not be patented?</div> <div class="answer"><p>The following subjects are not entitled to patent protection:</p> </div> </article> <article> <div class="question">What is the purpose behind the patent law? </div> <div class="answer"><p>The origin of U.S. patent law can be found in the United States Constitution, Article I, Section 8, Clause 8, which provides that: "Congress shall have the power </p> </div> </article> <article> <div class="question">If abstract ideas and mental processes cannot be patented, how can software based on a mathematical algorithm receive patent protection?</div> <div class="answer"><p>For years, software was considered outside the scope of patent protection to the extent based on mathematical algorithms, as mathematics is the basic working tool of contemporary science and technology and algorithms can be natural laws. In 1981, the Supreme Court held that software-related inventions are not per se to be excluded from patent protection simply because the process of performing the program's function may involve underlying mathematical algorithms. Software uses a non-physical process by operating electronically through the utilization of a mathematical equation (algorithm) to control the output of the computer program. Mathematical algorithms have a functional application in computer programs, and thus can be protected under the Patent Act. To use an example from physics, electricity was not patentable, but the way in which electricity transmits information may be patentable. </p> </div> </article> <article> <div class="question">What is an "algorithm"?</div> <div class="answer"><p>An algorithm is the same as a mathematical equation in its structure, but it becomes a function through its input and output. For example, the equation (a+b = c) is a simple math equation. However, if we take that equation and add values for the letters such as, a=1, b=2, c=3, and then the program starts on a computer, this equation has created a function for simple letters and a summation. When a machine uses an equation to guide its operation, this is called an algorithm and the software for doing this can potentially be patented. If the formula is related to a natural law (such as E=mc^2), it cannot be patented as such, much the same as a simple math equation. However, such natural laws can be used to make patentable inventions in the categories discussed above, including software.</p> </div> </article> <article> <div class="question">What are the requirements for patent protection?</div> <div class="answer"><p>To qualify for patent protection, an invention must be new, useful and non-obvious. </p> </div> </article> <article> <div class="question">What happens if an invention is made public before a patent application is filed?</div> <div class="answer"><p>In the United States, an inventor cannot patent an invention if he or she discloses it to the public more than one year before filing for patent protection. This is sometimes known as the "on sale" bar to patentability. Public disclosure can occur when the invention is described in any published writing, or when the invention is offered for sale, including any pre-manufacture discussion about the invention that involves describing it. In most foreign countries, there is no one year grace period; the inventor must file the patent application before the invention is publicly offered for sale, used or displayed. </p> </div> </article> <article> <div class="question">What is "prior art"?</div> <div class="answer"><p>Publicly disclosed inventions, including patented inventions, are known as "prior art" that can be cited against a new patent applicant. Publicly disclosed inventions are considered prior art without regard to where (United States, Europe, Asia, etc.) or in what form the public disclosure occurred (a journal article, an archived PhD dissertation, an online publication). </p> </div> </article> <article> <div class="question">What happens if prior art is not disclosed in a patent application?</div> <div class="answer"><p>If a patent applicant intentionally fails to disclose relevant preexisting technology of which he or she was aware in his application, the patent could be invalidated on the grounds that the applicant engaged in inequitable conduct. Intentional failure to disclose can be inferred from evidence that the patent applicant was aware of the undisclosed technology and knew that it was material. </p> </div> </article> <article> <div class="question">What are patent "claims"?</div> <div class="answer"><p>A patent consists of an abstract, a description of the invention, disclosures of prior art, drawings, and one or more claims. The claims are the only truly enforceable part of a utility patent, and they define the property right owned by the patent holder. They are written in technical language, and must embody subject matter that is within the scope of patent law, is novel and is not obvious. The more broadly written the claims, the less likely they are to avoid rejection or invalidation on the grounds of obviousness or anticipation by prior technology. The more narrowly written, the less likely a competing technology or device infringes the claims. To infringe a patent, one must practice every element of a claim. If you do not practice one or more of the elements of a claim, then you do not infringe that claim. </p> </div> </article> <article> <div class="question">What are the elements of a claim?</div> <div class="answer"><p>Patent claims generally contain an introductory paragraph called a "preamble," which is followed by a series of phrases called "elements." Elements can be recited as a means or steps for performing a specified function, but elements recited in this way may be interpreted more narrowly than if recited by name, structure or as a defined step. </p> </div> </article> <article> <div class="question">What is a claim's "priority date"?</div> <div class="answer"><p>A claim's priority date is the date upon which the technical disclosure that fully describes the invention covered by that claim is first filed with some patent office somewhere in the world. A patent must state on its face any such claim of priority. The claim must define the invention over any prior art available to the public before the priority date. If prior art is published after the priority date, the publication does not invalidate the claim. If it is published less than a year before the priority date, it may invalidate the claim unless the inventor can prove invention prior to the publication date. Finally, if a publication date is more than one year prior to a claim's priority date, then the publication invalidates the claim.</p> </div> </article> <article> <div class="question">What is a claim's invention date?</div> <div class="answer"><p>Making an invention requires a conception and a reduction to practice. The invention date is normally the date upon which an inventor first conceives his or her invention as defined by a given claim - the "conception date." The inventor must demonstrate diligence in reducing the invention to practice in order to preserve the conception date as the date of invention. Reducing the invention to practice means building a working example of the invention or filing a patent application that has an adequate disclosure of the invention. Sometimes under U.S. law, prior art must predate the invention date in order to invalidate the claim. In all other countries outside the U.S., the invention date has no significance; only the "priority date" is used to determine whether prior art invalidates a claim. </p> </div> </article> <article> <div class="question">What is a "provisional" patent application?</div> <div class="answer"><p>A provisional patent application is not examined, it does not have to include any claims defining the invention precisely, it does not have to name the inventors or provide their citizenship, and it expires in one year. The purpose of a provisional patent application is to establish a filing date for the invention disclosure that may later be claimed as a "priority" date in a later-filed regular or foreign patent application.</p> </div> </article> <article> <div class="question">How long is a patent's term?</div> <div class="answer"><p>For patents filed on June 8, 1995 or later, the protection lasts for 20 years from the date the patent application is filed. For patents filed prior to June 8, 1995, the term is 17 years from the date of issuance or 20 years from the date of application, whichever is longer. </p> </div> </article> <article> <div class="question">What does it mean to "infringe" a patent?</div> <div class="answer"><p>If you are accused of patent infringement, you are accused of having made, sold or offered for sale an invention described in one of the claims of a valid patent, without the patent owner's authorization. To determine if infringement has occurred, a court will look at the patent's claims, interpret them, and compare them to your device, process, method etc. Infringement occurs if your accused item performs each of the elements of any of the claims. Note that you may be liable for inducing infringement or contributing to infringement, even if you did not directly infringe a patent, if you encourage or assist someone else to infringe a patent.</p> </div> </article> <article> <div class="question">What are the defenses to patent infringement?</div> <div class="answer"><p>There are two basic lines of defense: non-infringement and invalidity.</p> <p><b>Non-infringement</b>: To infringe a patent, one must practice every element of a claim. If you do not practice one or more of the elements of a claim, then you do not infringe that claim. This determination often rests on how a court interprets the language of the claims you are accused of infringing. </p> <p><b>Invalidity</b>: Only a valid patent can be enforced. Issued patents are presumed valid, but this presumption can be overcome if prior art exists that demonstrates an invention was not novel or that it was obvious at the time the patent application was filed. Especially in the case of software and Internet business method patents, articles disclosing or describing the patented inventions may exist in trade publications that would not have been found by the patent examiner and would not have been part of the prosecution file of an issued patent on file with the USPTO. The patent holder's failure to name all inventors may also invalidate a patent.</p> </div> </article> <article> <div class="question">What are the consequences of being found to have committed patent infringement?</div> <div class="answer"><p>A patent owner may recover money damages in the form of a "reasonable royalty," which is the amount the patent holder could have earned in licensing the patented technology. Under certain circumstances, the patent owner may recover lost profits as an alternative measure of damages. The money damages amount may be tripled if the infringement is found to be "willful." The patent owner may also be entitled to enjoin further use and sale of the patented invention.</p> </div> </article> <article> <div class="question">Does it matter if infringement is accidental or innocent?</div> <div class="answer"><p>It does not matter for liability purposes that a patented infringer was unaware of the patented technology when infringement occurred. However, willful or intentional infringement may carry a higher monetary penalty than innocent infringement. </p> </div> </article> <article> <div class="question">How does copyright protection differ from patent protection?</div> <div class="answer"><p>A copyright can protect the particular way in which ideas are expressed in a particular computer program. A copyright owner has the right to prevent others from making unauthorized, literal copies of a software program, but not from independently creating software that performs the same functions. </p> <p>A patent, on the other hand, grants an inventor exclusive rights in the technology. With a software patent, one may prevent others from making, using or selling a program that performs the same process or function as the patented technology, even if different code is used. Often, a software developer does not merely wish to rely on the prevention of verbatim copying of the software, since a competitor may observe the functions performed by the software, and without knowing the details of the software code underlying the functions, write equivalent code.</p> </div> </article> <article> <div class="question">Can computer software be protected by copyright?</div> <div class="answer"><p>Yes. Software copyright law is a recent branch of the 1976 Copyright Act that was intended to protect artistic creations and creativity. Initially there was a question of whether copyright law could protect software because computer programs contain functional instructions regarding what a computer should do if given a command. Strictly functional instructions and ideas are not copyrightable because they do not meet the minimal copyright requirement for creativity. The existence of a requisite level of creativity was questioned in software. During the 1980s, however, through court decisions and congressional guidance, copyright law became a major form of legal protection for computer programs, some databases, and software technology. Through copyright protection, creators of computer programs can prevent or seek damages for unauthorized copying of programs. This right is not absolute, however. Courts still question whether particular elements of computer programs are sufficiently expressive to be protectable under copyright law. For example, some courts have held that a software program's graphical user interface (GUI) (or at least some elements of it) is insufficiently expressive for copyright protection.</p> </div> </article> <article> <div class="question">Can software technology be protected by patent law?</div> <div class="answer"><p>Yes. Software technology development is highly incremental in nature and, as a result, truly unique designs, methods or approaches are rare. In addition, prior art with respect to software technology is not centralized or even easily discovered. However, patents can and do often issue on software-based technology that is not, in fact, novel. Computer technologies can be patented as processes (software), machines, even articles of manufacture (the CD containing the software, for example). </p> </div> </article> <article> <div class="question">Can the same software qualify for both copyright and patent protection?</div> <div class="answer"><p>Yes. Software may qualify for both copyright and patent protection provided, of course, that the software satisfies the requirements for those intellectual property rights.</p> </div> </article> <article> <div class="question">What is a business method patent?</div> <div class="answer"><p>A business method patent is a specific type of software patent on a computer implemented way of transacting business. As in the case of other software patents, business method patents can have process claims in the form of a sequence of steps comprising the business method carried out using a computer system, the system configuration defined by the software for carrying out the business method, or an article of manufacture, such as a CD having the software for carrying out the business method stored on it. Some business method patents are controversial because they appear to cover otherwise conventional business techniques, such as auctions, when implemented on the Internet or other networked computers. Other business method patents have been allowed without considering the best prior art and may be overbroad.</p> <p>Patents have issued on methods and systems covering -- or purporting to cover -- such things as: all Internet-like browser/display systems (to Prodigy Services Company); reverse auctions over the Internet (to E-Bay); placing a purchase order via a communications network (the "one-click" patent to Amazon.com), and the like. Many computer program and so-called "business method" patents have been challenged as invalid and improvidently granted on the grounds that the innovation lacks sufficient uniqueness or inventiveness. Nonetheless, because a patent can confer broad and powerful rights upon its owner, and once issued is presumptively valid, patent owners are attempting to enforce their rights against rival software developers or website operators.</p> </div> </article> <article> <div class="question">Where I can read more about business method patents?</div> <div class="answer"><p>The U.S. Patent Office has a great deal of useful information on its website, at <a href="http://www.uspto.gov/web/menu/pbmethod/" target="new"><a href="http://www.uspto.gov/web/menu/pbmethod/">http://www.uspto.gov/web/menu/pbmethod/</a></a>.</p> </div> </article> <article> <div class="question">How can I search for a U.S. Patent?</div> <div class="answer"><p>Issued U.S. patents can be found on the United States Patent and Trademark Office website, at <a href="http://www.uspto.gov/patft/index.html">http://www.uspto.gov/patft/index.html</a>. They are also available at patent depository libraries around the country. For more information on libraries, see <a href="http://www.uspto.gov/go/ptdl/">http://www.uspto.gov/go/ptdl/</a>.</p> </div> </article> <article> <div class="question">Where can I find U.S. patent law?</div> <div class="answer"><p>The Patent Act is codified at <a href="http://www4.law.cornell.edu/uscode/35/pII.html" target="new">35 U.S.C. 100 and following</a>, available from <a href="http://www4.law.cornell.edu/uscode/35/pII.html" target="new"><a href="http://www4.law.cornell.edu/uscode/35/pII.html">http://www4.law.cornell.edu/uscode/35/pII.html</a></a>. </p> </div> </article> <article> <div class="question">What does it mean to obtain a license for a patent?</div> <div class="answer"><p>A license, in its simplest terms, is a promise by the patent owner (the licensor) not to sue the licensee for exercising one of the patent owner's rights. Patent laws grant the patent owner rights to exclude others from making, using, or selling the patented invention. Using a contract called a "license," a patent owner may choose to allow one or more others to make, use and/or sell the invention, usually in exchange for payment. As long as the licensee abides by the terms of the license contract, a patent owner cannot sue the licensee for infringement. Patent infringement cases are often settled by the accused infringer entering into a license agreement with the patent owner and promising to pay the patent owner royalties.</p> </div> </article> <article> <div class="question">Who may own patents? </div> <div class="answer"><p>The presumptive owner of an invention is the human inventor(s). The inventor may transfer ownership to anyone (including a corporation). Employees often assign the rights to their invention to their employers as part of their employment contracts.</p> </div> </article> <article> <div class="question">Are patents assignable?</div> <div class="answer"><p>The patent laws provide that patents shall have the attributes of personal property, and as such, can be assigned by a written document. The inventor, who is initially the presumed owner of the patent rights to the invention, may transfer ownership to anyone, including a corporation. Employees often assign the rights to their inventions to their employers as part of their employment contracts.</p> </div> </article> <article> <div class="question">What is due diligence?</div> <div class="answer"><p>Due diligence is an intellectual property investigation that, among other things, determines what the intellectual property is, who owns the rights to the property, and whether those rights are enforceable. The information can then be used to evaluate the viability of a particular business transaction. </p> </div> </article> <article> <div class="question">What is a "continuation"?</div> <div class="answer"><p>Applicable mainly in the US, continuations are second or subsequent applications which are subsequently filed while the original parent application is pending. Continuations must claim the same invention as the original application to gain the benefit of the parent filing date. </p> </div> </article> <article> <div class="question">How can I search for foreign patents?</div> <div class="answer"><p>Several online search services are available to find foreign patents. A collection can be found here: <a href="http://www.library.okstate.edu/patents/foreign.htm">http://www.library.okstate.edu/patents/foreign.htm</a>.</p> </div> </article> <article> <div class="question">What is 35 U.S.C. 273?</div> <div class="answer"><p>35 U.S.C. 273 Defense to infringement based on earlier inventor.</p> <p>(a) DEFINITIONS.- For purposes of this section-</p> <p>(1) the terms "commercially used" and "commercial use" mean use of a method in the United States, so long as such use is in connection with an internal commercial use or an actual arm's-length sale or other arm's-length commercial transfer of a useful end result, whether or not the subject matter at issue is accessible to or otherwise known to the public, except that the subject matter for which commercial marketing or use is subject to a premarketing regulatory review period during which the safety or efficacy of the subject matter is established, including any period specified in section 156(g), shall be deemed "commercially used" and in "commercial use" during such regulatory review period;</p> <p>(2) in the case of activities performed by a nonprofit research laboratory, or nonprofit entity such as a university, research center, or hospital, a use for which the public is the intended beneficiary shall be considered to be a use described in paragraph (1), except that the use-</p> <p>(A) may be asserted as a defense under this section only for continued use by and in the laboratory or nonprofit entity; and</p> <p>(B) may not be asserted as a defense with respect to any subsequent commercialization or use outside such laboratory or nonprofit entity;</p> <p>(3) the term "method" means a method of doing or conducting business; and</p> <p>(4) the "effective filing date" of a patent is the earlier of the actual filing date of the application for the patent or the filing date of any earlier United States, foreign, or international application to which the subject matter at issue is entitled under section 119, 120, or 365 of this title.</p> <p>(b) DEFENSE TO INFRINGEMENT.-</p> <p>(1) IN GENERAL.- It shall be a defense to an action for infringement under section 271 of this title with respect to any subject matter that would otherwise infringe one or more claims for a method in the patent being asserted against a person, if such person had, acting in good faith, actually reduced the subject matter to practice at least 1 year before the effective filing date of such patent, and commercially used the subject matter before the effective filing date of such patent.</p> <p>(2) EXHAUSTION OF RIGHT.- The sale or other disposition of a useful end product produced by a patented method, by a person entitled to assert a defense under this section with respect to that useful end result shall exhaust the patent owner's rights under the patent to the extent such rights would have been exhausted had such sale or other disposition been made by the patent owner.</p> <p>(3) LIMITATIONS AND QUALIFICATIONS OF DEFENSE.- The defense to infringement under this section is subject to the following:</p> <p>(A) PATENT.- A person may not assert the defense under this section unless the invention for which the defense is asserted is for a method.</p> <p>(B) DERIVATION.- A person may not assert the defense under this section if the subject matter on which the defense is based was derived from the patentee or persons in privity with the patentee.</p> <p>(C) NOT A GENERAL LICENSE.- The defense asserted by a person under this section is not a general license under all claims of the patent at issue, but extends only to the specific subject matter claimed in the patent with respect to which the person can assert a defense under this chapter, except that the defense shall also extend to variations in the quantity or volume of use of the claimed subject matter, and to improvements in the claimed subject matter that do not infringe additional specifically claimed subject matter of the patent.</p> <p>(4) BURDEN OF PROOF.- A person asserting the defense under this section shall have the burden of establishing the defense by clear and convincing evidence.</p> <p>(5) ABANDONMENT OF USE.- A person who has abandoned commercial use of subject matter may not rely on activities performed before the date of such abandonment in establishing a defense under this section with respect to actions taken after the date of such abandonment.</p> <p>(6) PERSONAL DEFENSE.- The defense under this section may be asserted only by the person who performed the acts necessary to establish the defense and, except for any transfer to the patent owner, the right to assert the defense shall not be licensed or assigned or transferred to another person except as an ancillary and subordinate part of a good faith assignment or transfer for other reasons of the entire enterprise or line of business to which the defense relates.</p> <p>(7) LIMITATION ON SITES.- A defense under this section, when acquired as part of a good faith assignment or transfer of an entire enterprise or line of business to which the defense relates, may only be asserted for uses at sites where the subject matter that would otherwise infringe one or more of the claims is in use before the later of the effective filing date of the patent or the date of the assignment or transfer of such enterprise or line of business.</p> <p>(8) UNSUCCESSFUL ASSERTION OF DEFENSE.- If the defense under this section is pleaded by a person who is found to infringe the patent and who subsequently fails to demonstrate a reasonable basis for asserting the defense, the court shall find the case exceptional for the purpose of awarding attorney fees under section 285 of this title.</p> <p>(9) INVALIDITY.- A patent shall not be deemed to be invalid under section 102 or 103 of this title solely because a defense is raised or established under this section.</p> <p>(Added Nov. 29, 1999, Public Law 106-113, sec. 1000(a)(9), 113 Stat. 1501A-555 (S. 1948 sec. 4302).)</p> </div> </article> </div> </section> </div> </section> <footer class="main"> <div class="nav-wrapper"> <div class="nav-item"> <span><img height="16" style="vertical-align: middle;" src="/assets/Cc.logo.circle-e5300412c8b02cb8ba4db0b20bafbc078b7661cb21b155c36253170b61b7f736.svg" /> 2017 Lumen</span> </div> <div class="flex-end"> <nav> <span class="nav-item"><a href="/pages/legal">Legal</a></span> <span class="nav-item"><a href="/pages/license">Licenses</a></span> <span class="nav-item"><a href="/pages/privacy">Privacy</a></span> <span class="nav-item"><a href="/pages/researchers">Researchers</a></span> <span class="nav-item"><a href="/pages/blog-archive">Blog Archive</a></span> <span class="nav-item"><a href="/pages/lumen-research-sprint">Spring '22 Research Sprint</a></span> <span class="nav-item"><a href="/users/sign_in">Sign In</a></span> </nav> </div> </div> </footer> <script 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