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{{Use dmy dates|date=August 2019}}{{Intellectual property}}The public domain consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired,BOOK, Boyle, James, The Public Domain: Enclosing the Commons of the Mind, CSPD, 2008, 38,weblink 978-0-300-13740-8, no,weblink" title="">weblink 14 February 2015, been forfeited,BOOK,weblink Intellectual Property and Traditional Cultural Expressions in a Digital Environment, Graber, Christoph B., Nenova, Mira B., Edward Elgar Publishing, 2008, 978-1-84720-921-4, 173, no,weblink" title="">weblink 20 December 2014, expressly waived, or may be inapplicable.unprotected {{webarchive|url= |date=2 March 2016 }} on bitlaw.comThe works of William Shakespeare and Ludwig van Beethoven, and most early silent films, are in the public domain either by virtue of their having been created before copyright existed, or by their copyright term having expired. Some works are not covered by copyright, and are therefore in the public domain—among them the formulae of Newtonian physics, cooking recipes,Copyright Protection Not Available for Names, Titles, or Short Phrases {{webarchive|url= |date=5 April 2016 }} on "Listings of ingredients, as in recipes, labels, or formulas. When a recipe or formula is accompanied by an explanation or directions, the text directions may be copyrightable, but the recipe or formula itself remains uncopyrightable." and all computer software created prior to 1974.Lemley, Menell, Merges and Samuelson. Software and Internet Law, p. 34 "computer programs, to the extent that they embody an author's original creation, are proper subject matter of copyright." Other works are actively dedicated by their authors to the public domain (see waiver); some examples include reference implementations of cryptographic algorithms,SERPENT - A Candidate Block Cipher for the Advanced Encryption Standard {{webarchive|url= |date=13 January 2013 }} "Serpent is now completely in the public domain, and we impose no restrictions on its use. This was announced on 21 August at the First AES Candidate Conference." (1999) mainReference.c "The Keccak sponge function, designed by Guido Bertoni, Joan, Michaël Peeters and Gilles Van Assche. For more information, feedback or questions, please refer to our website:weblink{{dead link|date=December 2017 |bot=KAP03 |fix-attempted=yes }} by the designers, Herbert demoted as "the implementer". To the extent possible under law, the implementer has waived all copyright and related or neighboring rights to the source code in this file.weblink" {{webarchive|url= |date=26 June 2013 }} {{webarchive|url= |date=10 June 2016 }} on, skein.c "Implementation of the Skein hash function. Source code author: Doug Whiting, 2008. This algorithm and source code is released to the public domain." the image-processing software ImageJ,disclaimer {{webarchive|url= |date=5 March 2016 }} on (created by the National Institutes of Health), and the CIA's World Factbook.contributor_copyright {{webarchive|url= |date=1 February 2016 }} on "The World Factbook is prepared by the Central Intelligence Agency for the use of US Government officials,[...] The Factbook is in the public domain" The term public domain is not normally applied to situations where the creator of a work retains residual rights, in which case use of the work is referred to as "under license" or "with permission".As rights vary by country and jurisdiction, a work may be subject to rights in one country and be in the public domain in another. Some rights depend on registrations on a country-by-country basis, and the absence of registration in a particular country, if required, gives rise to public-domain status for a work in that country. The term public domain may also be interchangeably used with other imprecise or undefined terms such as the "public sphere" or "commons", including concepts such as the "commons of the mind", the "intellectual commons", and the "information commons".


Although the term "domain" did not come into use until the mid-18th century, the concept can be traced back to the ancient Roman Law, “as a preset system included in the property right system."JOURNAL, Huang, H., On public domain in copyright law, Frontiers of Law in China, 2009, 4, 2, 178–195, 10.1007/s11463-009-0011-6, The Romans had a large proprietary rights system where they defined "many things that cannot be privately owned" as res nullius, res communes, res publicae and res universitatis. The term res nullius was defined as things not yet appropriated.Rose, C Romans, Roads, and Romantic Creators: Traditions of Public Property in the Information Age (Winter 2003) Law and Contemporary Problems 89 at p.5, p.4 The term res communes was defined as "things that could be commonly enjoyed by mankind, such as air, sunlight and ocean." The term res publicae referred to things that were shared by all citizens, and the term res universitatis meant things that were owned by the municipalities of Rome. When looking at it from a historical perspective, one could say the construction of the idea of "public domain" sprouted from the concepts of res communes, res publicae, and res universitatis in early Roman law.When the first early copyright law was first established in Britain with the Statute of Anne in 1710, public domain did not appear. However, similar concepts were developed by British and French jurists in the 18th century. Instead of "public domain", they used terms such as publici juris or propriété publique to describe works that were not covered by copyright law.BOOK, Torremans, Paul, Copyright law: a handbook of contemporary research, Edward Elgar Publishing, 2007, 134–135,weblink 978-1-84542-487-9, The phrase "fall in the public domain" can be traced to mid-19th century France to describe the end of copyright term. The French poet Alfred de Vigny equated the expiration of copyright with a work falling "into the sink hole of public domain"BOOK, Torremans, Paul, Copyright law: a handbook of contemporary research, Edward Elgar Publishing, 2007, 154,weblink 978-1-84542-487-9, and if the public domain receives any attention from intellectual property lawyers it is still treated as little more than that which is left when intellectual property rights, such as copyright, patents, and trademarks, expire or are abandoned.BOOK, Ronan, Deazley, Rethinking copyright: history, theory, language, Edward Elgar Publishing, 2006, 103,weblink 978-1-84542-282-0, no,weblink 19 November 2011, In this historical context Paul Torremans describes copyright as a, "little coral reef of private right jutting up from the ocean of the public domain."BOOK, Torremans, Paul, Copyright law: a handbook of contemporary research, Edward Elgar Publishing, 2007, 137,weblink 978-1-84542-487-9, Copyright law differs by country, and the American legal scholar Pamela Samuelson has described the public domain as being "different sizes at different times in different countries".BOOK, Ronan, Deazley, Rethinking copyright: history, theory, language, Edward Elgar Publishing, 2006, 102,weblink 978-1-84542-282-0, no,weblink 19 November 2011,


File:NewtonsPrincipia.jpg|thumb|Newton's own copy of his Principia, with hand-written corrections for the second edition]]Definitions of the boundaries of the public domain in relation to copyright, or intellectual property more generally, regard the public domain as a negative space; that is, it consists of works that are no longer in copyright term or were never protected by copyright law.BOOK, Ronan, Deazley, Rethinking copyright: history, theory, language, Edward Elgar Publishing, 2006, 104,weblink 978-1-84542-282-0, no,weblink 19 November 2011, According to James Boyle this definition underlines common usage of the term public domain and equates the public domain to public property and works in copyright to private property. However, the usage of the term public domain can be more granular, including for example uses of works in copyright permitted by copyright exceptions. Such a definition regards work in copyright as private property subject to fair-use rights and limitation on ownership. A conceptual definition comes from Lange, who focused on what the public domain should be: "it should be a place of sanctuary for individual creative expression, a sanctuary conferring affirmative protection against the forces of private appropriation that threatened such expression". Patterson and Lindberg described the public domain not as a "territory", but rather as a concept: "[T]here are certain materials – the air we breathe, sunlight, rain, space, life, creations, thoughts, feelings, ideas, words, numbers – not subject to private ownership. The materials that compose our cultural heritage must be free for all living to use no less than matter necessary for biological survival."BOOK, Ronan, Deazley, Rethinking copyright: history, theory, language, Edward Elgar Publishing, 2006, 105,weblink 978-1-84542-282-0, no,weblink 19 November 2011, The term public domain may also be interchangeably used with other imprecise or undefined terms such as the "public sphere" or "commons", including concepts such as the "commons of the mind", the "intellectual commons", and the "information commons".

Public domain by medium

{{more citations needed|date=April 2018}}

Public domain books

A public-domain book is a book with no copyright, a book that was created without a license, or a book where its copyrights expiredWEB,weblink The Public Domain: Enclosing the Commons of the Mind, James, Boyle, 1 January 2008, Yale University Press, 30 December 2016, Google Books, or have been forfeited.WEB,weblink Intellectual Property and Traditional Cultural Expressions in a Digital Environment, Christoph Beat, Graber, Mira Burri, Nenova, 1 January 2008, Edward Elgar Publishing, 30 December 2016, Google Books, In most countries the term of protection of copyright lasts until January first, 70 years after the death of the latest living author. The longest copyright term is in Mexico, which has life plus 100 years for all deaths since July 1928.A notable exception is the United States, where every book and tale published prior to 1924 is in the public domain; American copyrights last for 95 years for books written between 1924 and 1978.WEB,weblink A Landslide of Classic Art Is About to Enter the Public Domain, Glenn Fleishman, 8 April 2019, 29 July 2019, For several decades from 2019 onward, each New Year’s Day will unleash a full year’s worth of works published 95 years earlier., For example: the works of Jane Austen, Lewis Carroll, Machado de Assis, Olavo Bilac and Edgar Allan Poe are in the public domain worldwide as they all died over 100 years ago.Project Gutenberg makes tens of thousands of public domain books available online as ebooks.

Public domain music

People have been creating music for millennia. The first musical notation system, the Music of Mesopotamia system, was created 4000 years ago. Guido of Arezzo introduced Latin musical notation in the 10th century.{{citation needed|date=August 2016}} This laid the foundation for the preservation of global music in the public domain, a distinction formalized alongside copyright systems in the 17th Century. Musicians copyrighted their publications of musical notation as literary writings, but performing copyrighted pieces and creating derivative works were not restricted by early copyright laws. Copying was widespread, in compliance with the law, but expansions of those laws intended to benefit literary works and responding to commercial music recording technology's reproducibility have led to stricter rules. Relatively recently, a normative view that copying in music is not desirable and lazy has become popular among professional musicians.U.S. copyright laws distinguish between musical compositions and sound recordings, the former of which refers to melody, notation and/or lyrics created by a composer and/or lyricist, including sheet music, and the latter referring to a recording performed by an artist, including a CD, LP, or digital sound file.WEB,weblink Copyright Registration of Musical Compositions and Sound Recordings, United States Copyright Office, pdf, October 15, 2018, Musical compositions fall under the same general rules as other works, and anything published prior to 1922 is considered public domain. Sound recordings, on the other hand, are subject to different rules and are not eligible for public domain status until 2021–2067, depending on the date and location of publishing.WEB,weblink Copyright Term and the Public Domain in the United States, Cornell University, October 15, 2018, The Musopen project records music in the public domain for the purposes of making the music available to the general public in a high-quality audio format. Online musical archives preserve collections of classical music recorded by Musopen and offer them for download/distribution as a public service. File:Rock Rock Rock(1956).ogv |thumb |thumbtime=6|upright=1.5|Rock, Rock, Rock, a film from 1956.]]

Public domain films

A public-domain film is a film that was released to public domain by its author or because its copyright has expired. In 2016 there are more than 2,000 films on public domain in every genre, from musicals to romance, horror to animated movies and noir to western movies.{{Citation needed|date=December 2017}}


Pamela Samuelson has identified eight "values" that can arise from information and works in the public domain.BOOK, Guibault, Lucy, Bernt Hugenholtz, The future of the public domain: identifying the commons in information law, Kluwer Law International, 2006,weblink 978-9-0411-24357, no,weblink" title="">weblink 18 December 2014, dmy-all, Possible values include:
  1. Building blocks for the creation of new knowledge, examples include data, facts, ideas, theories, and scientific principle.
  2. Access to cultural heritage through information resources such as ancient Greek texts and Mozart's symphonies.
  3. Promoting education, through the spread of information, ideas, and scientific principles.
  4. Enabling follow-on innovation, through for example expired patents and copyright.
  5. Enabling low cost access to information without the need to locate the owner or negotiate rights clearance and pay royalties, through for example expired copyrighted works or patents, and non-original data compilation.WEB,weblink From music tracks to Google maps: who owns Computer Generated Works?, Perry&Margoni, 2010, Computer Law and Security Review, 1647584,
  6. Promoting public health and safety, through information and scientific principles.
  7. Promoting the democratic process and values, through news, laws, regulation, and judicial opinion.
  8. Enabling competitive imitation, through for example expired patents and copyright, or publicly disclosed technologies that do not qualify for patent protection.{{rp|22}}

Relationship with derivative works

Derivative works include translations, musical arrangements, and dramatizations of a work, as well as other forms of transformation or adaptation.WEB, Stern, Prof Richard H., L.H.O.O.Q. Internet related Derivative Works, Supplemental material Computer Law 484, The George Washington University Law School, 2001,weblink 23 May 2010, Copyrighted works may not be used for derivative works without permission from the copyright owner,BOOK, Understanding copyright law, Legal text series; Contemporary Casebook Series, Leaffer, Marshall A., 2nd, M. Bender, 1995, 0-256-16448-7, 46,weblink while public domain works can be freely used for derivative works without permission.BOOK, Introduction to intellectual property: theory and practice, World Intellectual Property Organisation, Kluwer Law International, 1997, 313,weblink 978-90-411-0938-5, no,weblink" title="">weblink 6 April 2015, dmy-all, BOOK, Fishman, Stephen, The copyright handbook: what every writer needs to know,weblink 1 June 2010, September 2008, Nolo, 978-1-4133-0893-8, 178, Artworks that are public domain may also be reproduced photographically or artistically or used as the basis of new, interpretive works.BOOK, Fishman, Stephen, Public domain: how to find and use copyright-free writings, music, art and more, Nolo, 2008, 124–125,weblink 978-1-4133-0858-7, Works derived from public domain works can be copyrighted.Public Domain Trouble Spots - Copyright Overview by Rich Stim - Stanford Copyright and Fair Use Center {{webarchive |url=weblink" title="">weblink |date=18 May 2016 }}. Section called "Public Domain Works That Are Modified".Once works enter into the public domain, derivative works such as adaptations in book and film may increase noticeably, as happened with Frances Hodgson Burnett's novel The Secret Garden, which became public domain in the U.S. in 1987 and most of the rest of the world in 1995.BOOK, Lundin, Anne H., Constructing the canon of children's literature: beyond library walls and ivory towers,weblink 1 June 2010, 2 August 2004, Routledge, 978-0-8153-3841-3, 138, By 1999, the plays of Shakespeare, all public domain, had been used in more than 420 feature-length films.Young, Mark (ed.). The Guinness Book of Records 1999, Bantam Books, 358; Voigts-Virchow, Eckartm (2004), Janespotting and Beyond: British Heritage Retrovisions Since the Mid-1990s, Gunter Narr Verlag, 92. In addition to straightforward adaptation, they have been used as the launching point for transformative retellings such as Tom Stoppard's Rosencrantz and Guildenstern Are Dead and Troma Entertainment's Romeo and Juliet.BOOK, Homan, Sidney, Directing Shakespeare: a scholar onstage,weblink 1 June 2010, 2004, Ohio University Press, 978-0-8214-1550-4, 101, BOOK, Kossak, Saskia, "Frame my face to all occasions": Shakespeare's Richard III on screen,weblink 1 June 2010, 2005, Braumüller, 978-3-7003-1492-9, 17, BOOK, Cartmell, Deborah, Imelda Whelehan, The Cambridge companion to literature on screen,weblink 1 June 2010, 2007, Cambridge University Press, 978-0-521-61486-3, 69, Marcel Duchamp's L.H.O.O.Q. is a derivative of Leonardo da Vinci's Mona Lisa, one of thousands of derivative works based on the public domain painting.

Perpetual copyright

Some works may never fully lapse into the public domain. A perpetual crown copyright is held for the Authorized King James Version of the Bible in the UK.BOOK, Bruce M., Metzger, The Oxford companion to the Bible, 2006, Oxford Univ. Press, Oxford, 978-0-1950-46458, 618,weblink While the copyright has expired for the Peter Pan works by J. M. Barrie (the play Peter Pan, or the Boy Who Wouldn't Grow Up and the novel Peter and Wendy) in the United Kingdom, it was granted a special exception under the Copyright, Designs, and Patents Act 1988 (Schedule 6)WEB,weblink Copyright, Designs and Patents Act 1988 (c. 48), Office of Public Sector Information, 1988, 28, 2 September 2008, no,weblink" title="">weblink 1 June 2008, that requires royalties to be paid for commercial performances, publications and broadcasts of the story of Peter Pan within the UK, as long as Great Ormond Street Hospital (to whom Barrie gave the copyright) continues to exist.In a paying public domain regime, works that have entered the public domain after their copyright has expired, or traditional knowledge and traditional cultural expressions that have never been subject to copyright, are still subject to royalties payable to the state or to an authors' association. The user does not have to seek permission to copy, present or perform the work, but does have to pay the fee. Typically the royalties are directed to support of living artists.{{citation |date=24 November 2010 |publisher=Intergovernmental Committee on Intellectual Property and Genetic Resources, Traditional Knowledge and Folklore: Seventeenth Session
|author=WIPO Secretariat |title=Note on the Meanings of the Term "Public Domain" in the Intellectual Property System with special reference to the Protection of Traditional Knowledge and Traditional Cultural Expressions/Expressions of Folklore |url= |accessdate=2018-11-28}}

Public domain mark

File:Cc-public_domain_mark_white.svg |thumb |150px|Creative Commons' Public Domain MarkPublic Domain MarkThe Creative Commons proposed in 2010 the Public Domain Mark (PDM) as symbol to indicate that a work is free of known copyright restrictions and therefore in the public domain.NEWS,weblink Creative Commons announces the Public Domain Mark, The H, The H Open, 12 October 2010, 12 October 2010, yes,weblink" title="">weblink 16 October 2010, WEB,weblink Improving Access to the Public Domain: the Public Domain Mark, Creative Commons, Diane Peters, 12 October 2010, 11 October 2010, no,weblink" title="">weblink 14 October 2010, The public domain mark is analogous to the copyright symbol, which acts as copyright notice. The Europeana databases use it, and for instance on the Wikimedia Commons in February 2016 2.9 million works (~10% of all works) are listed as PDM.Category:CC-PD-Mark {{webarchive|url= |date=12 March 2016 }} in February 2016

Application to copyrightable works

Works not covered by copyright law

The underlying idea that is expressed or manifested in the creation of a work generally cannot be the subject of copyright law (see idea–expression divide). Mathematical formulae will therefore generally form part of the public domain, to the extent that their expression in the form of software is not covered by copyright.Works created before the existence of copyright and patent laws also form part of the public domain. For example, the Bible and the inventions of Archimedes are in the public domain. However, translations or new formulations of these works may be copyrighted in themselves.

Expiration of copyright

Determination of whether a copyright has expired depends on an examination of the copyright in its source country.In the United States, determining whether a work has entered the public domain or is still under copyright can be quite complex, primarily because copyright terms have been extended multiple times and in different ways—shifting over the course of the 20th century from a fixed-term based on first publication, with a possible renewal term, to a term extending to 50, then 70, years after the death of the author. The claim that "pre-1924 works are in the public domain" is correct only for published works; unpublished works are under federal copyright for at least the life of the author plus 70 years.In most other countries that are signatories to the Berne Convention, copyright term is based on the life of the author, and extends to 50 or 70 years beyond the death of the author. (See List of countries' copyright lengths.)Legal traditions differ on whether a work in the public domain can have its copyright restored. In the European Union, the Copyright Duration Directive was applied retroactively, restoring and extending the terms of copyright on material previously in the public domain. Term extensions by the U.S. and Australia generally have not removed works from the public domain, but rather delayed the addition of works to it. However, the United States moved away from that tradition with the Uruguay Round Agreements Act, which removed from the public domain many foreign-sourced works that had previously not been in copyright in the US for failure to comply with US-based formalities requirements. Consequently, in the US, foreign-sourced works and US-sourced works are now treated differently, with foreign-sourced works remaining under copyright regardless of compliance with formalities, while domestically-sourced works may be in the public domain if they failed to comply with then-existing formalities requirements—a situation described as odd by some scholars, and unfair by some US-based rightsholders.Dennis Karjala, "Judicial Oversight of Copyright Legislation", 35 N. Ky. L. Rev. 253 (2008).

Government works

Works of the United States Government and various other governments are excluded from copyright law and may therefore be considered to be in the public domain in their respective countries.Copyright Office Basics {{webarchive |url=weblink" title="">weblink |date=25 February 2009 }} They may also be in the public domain in other countries as well. The legal scholar Melville Nimmer has written that "it is axiomatic that material in the public domain is not protected by copyright, even when incorporated into a copyrighted work".Nimmer, Melville B., and David Nimmer (1997). Nimmer on Copyright, section 13.03(F)(4). Albany: Matthew Bender.

Dedicating works to the public domain

Release without copyright notice

Before 1988 in the US, works could be easily given into the public domain by just releasing it without an explicit Copyright notice. With the Berne Convention Implementation Act of 1988 (and the earlier Copyright Act of 1976, which went into effect in 1978), all works were by default copyright protected and needed to be actively given into public domain by a waiver statement/anti-copyright can call notice.WEB,weblink Copyright Term and the Public Domain in the United States, 30 December 2016, no,weblink" title="">weblink 26 September 2010, Copyright Notice {{webarchive|url= |date=26 September 2012 }}, U.S. Copyright Office Circular 3, 2008. Not all legal systems have processes for reliably donating works to the public domain, e.g. civil law of continental Europe.{{Citation needed|date=July 2016}} This may even "effectively prohibit any attempt by copyright owners to surrender rights automatically conferred by law, particularly moral rights".WEB,weblink About CC0 — "No Rights Reserved", Creative Commons, 23 April 2013, no,weblink" title="">weblink 28 April 2013,

Public-domain-like licenses

An alternative is for copyright holders to issue a licence which irrevocably grants as many rights as possible to the general public. Real public domain makes licenses unnecessary, as no owner/author is required to grant permission ("Permission culture"). There are multiple licenses which aim to release works into the public domain. In 2000 the WTFPL was released as a public domain like software license.weblink" title="">Version 1.0 license on In 2009 the Creative commons released the CC0, which was created for compatibility with law domains which have no concept of dedicating into public domain. This is achieved by a public domain waiver statement and a fall-back all-permissive license, in case the waiver is not possible.WEB,weblink 11/17: Lulan Artisans Textile Competition, 17 June 2009, 30 December 2016, no,weblink 31 December 2016, Validity of the Creative Commons Zero 1.0 Universal Public Domain Dedication and its usability for bibliographic metadata from the perspective of German Copyright Law by Dr. Till Kreutzer, attorney-at-law in Berlin, Germany The Unlicense, published around 2010, has a focus on an Anti-copyright message. The Unlicense offers a public domain waiver text with a fall-back public domain-like license inspired by permissive licenses but without attribution.the-unlicense-a-license-for-no-license {{webarchive|url= |date=24 March 2016 }} on by Joe Brockmeier (2010)The Unlicense on unlicense.orgIn October 2014 the Open Knowledge Foundation recommends the Creative Commons CC0 license to dedicate content to the public domain,licenses on opendefinition.comCreative Commons 4.0 BY and BY-SA licenses approved conformant with the Open Definition by Timothy Vollmer on (27 December 2013) and the Open Data Commons Public Domain Dedication and License (PDDL) for data.pddl on


In most countries, the term of rights for patents is 20 years, after which the invention becomes part of the public domain. In the United States, the contents of patents are considered valid and enforceable for 20 years from the date of filing within the United States or 20 years from the earliest date of filing if under 35 USC 120, 121, or 365(c).Manual of Patent Examining Procedure available at WEB,weblink Archived copy, 26 April 2015, no,weblink" title="">weblink 18 April 2015, However, the text and any illustration within a patent, provided the illustrations are essentially line drawings and do not in any substantive way reflect the "personality" of the person drawing them, are not subject to copyright protection.WEB,weblink Terms of Use for USPTO Websites, Office of the Chief Communications, Officer, 30 December 2016, no,weblink" title="">weblink 25 September 2009, This is separate from the patent rights just mentioned.


A trademark registration may remain in force indefinitely, or expire without specific regard to its age. For a trademark registration to remain valid, the owner must continue to use it. In some circumstances, such as disuse, failure to assert trademark rights, or common usage by the public without regard for its intended use, it could become generic, and therefore part of the public domain.Because trademarks are registered with governments, some countries or trademark registries may recognize a mark, while others may have determined that it is generic and not allowable as a trademark in that registry. For example, the drug "acetylsalicylic acid" (2-acetoxybenzoic acid) is better known as aspirin in the United States—a generic term. In Canada, however, "Aspirin", with an uppercase A, is still a trademark of the German company Bayer, while aspirin, with a lowercase "a", is not. Bayer lost the trademark in the United States, the UK and France after World War I, as part of the Treaty of Versailles. So many copycat products entered the marketplace during the war that it was deemed generic just three years later.Aspirin {{webarchive|url= |date=24 August 2005 }}, World of MoleculesBayer also lost the trademark in the same jurisdictions for "Heroin" which it trademarked a year before it trademarked Aspirin.{{citation needed|date=August 2014}}Although Hormel resigned itself to genericide,WEB,weblinkweblink yes, 13 October 2009, SPAM® Brand and the Internet, Hormel Foods, it has fought attempts by other companies to register "spam" as a trademark in relation to computer products.NEWS,weblink Hormel Spam trademark case canned, Kieren McCarthy, 31 January 2005, 2 September 2008, no,weblink 7 July 2008,

Public Domain Day

(File:Logo PDD 2019.svg|thumb|An English logo of the 2018/2019 Public Domain Day in Poland)Public Domain Day is an observance of when copyrights expire and works enter into the public domain.WEB, Richmond, Shane,weblink Happy Public Domain Day! Here's to many more – Telegraph Blogs,, 1 January 2010, 24 December 2011, no,weblink" title="">weblink 15 May 2012, This legal transition of copyright works into the public domain usually happens every year on 1 January based on the individual copyright laws of each country.The observance of a "Public Domain Day" was initially informal; the earliest known mention was in 2004 by Wallace McLean (a Canadian public domain activist),WEB,weblink Happy Public Domain Day!, Wallace J., McLean, 1 January 2004, American University, with support for the idea echoed by Lawrence Lessig.WEB, Lessig, Lawrence,weblink Public domain day - in Canada (Lessig Blog),, 1 January 2004, 25 December 2011, yes,weblink" title="">weblink 7 November 2011, {{As of|2010|1|1}} a Public Domain Day website lists the authors whose works are entering the public domain.Public Domain Day 2010 {{webarchive|url= |date=14 October 2012 }} at MetaFilter establishes the existence of the website at the time. There are activities in countries around the world by various organizations all under the banner Public Domain Day.

See also

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External links

{{Wiktionary}}{{Commons category|Public domain (copyright)}} {{-}}{{Intellectual property activism}}{{Years in Public Domain}}{{FOSS}}

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