Should I ask author/publisher for permission if I want to create a free game out of the book? I want to create a free and open-source (licensed with GNU (A)GPL v3) using the plot and maybe the title of the book. I won't sell it and will have no income from it. I have some questions: Should I ask the heir of the book author (he died) for permission even if I won't sell the game? If no, what law/international convention does allow me to do so? If I have to ask, would it be enough to get permission via email or should I sign a contract with the right holder? If I got permission for non-profit use of the book plot (or if I don't have to get that permission), can I collect non-binding donations on the game's website? Thank you very much.
You don't just want to ask, you are required to obtain a license (or in other terms: the OK of the author*). Your game is based on a book. That makes your game a derivate work. Under berne convention, any signer state has to make sure that the author* has the right to authorize any derivate. That includes translations, films, or games. Without a license, you violate copyright law. It doesn't matter if your game is free. To stay safe, you need to obtain a license. Quite some authors would be happy to cut a deal, license or guidelines for fan-projects. As an example, the late Sir Terry Pratchett OBE has specific guidelines on what is ok and what not. Ask your author* about these questions and consult a Lawyer! Only then make your fan project! * This means the author, their estate or whoever they assigned their rights in the work to. Some examples: For that teenage wizard in a private castle charter school that'd be a certain J.K. Rowling. For those hairy-halflings running all over the continent hunted by orcs that'd be the J.R.R. Tolkien-Estate. And for those space wizards using blades from solid light that'd be The Walt Disney Company or one of their subsidiaries.
Ideas (methods of playing, game mechanics, strategy, goals) cannot be protected by copyright. But any part of a creative work can. So, no copying of drawings, patterns, images, sounds, or the element. I suppose copying the software code is not an issue here, but it can, obviously, also not be copied. And nothing in your game can look like someone's else trademark.
It's possible that CAD has a separate licence from the authors of ABC that allows them to produce a closed source copy. If not, they have no right to distribute CAD. However two wrongs don't make a right, and so you don't get to violate the copyright of CAD.* Unfortunately, unless you are one of the authors of ABC, you have no standing to sue the authors of CAD. You can only notify the authors of ABC and hope they do. If the authors of ABC don't have the resources to pursue the matter, you may be out of luck. That's one of the reasons the FSF gets copyright assignments for their projects. * It turns out that this is a much more debateable issue than I first thought. Some courts have held that an unauthorized derivative work is not copyrightable.
According to the current version of the TOS: You own the rights to the content you create and post on Medium. By posting content to Medium, you give us a nonexclusive license to publish it on Medium Services, including anything reasonably related to publishing it (like storing, displaying, reformatting, and distributing it). In consideration for Medium granting you access to and use of the Services, you agree that Medium may enable advertising on the Services, including in connection with the display of your content or other information. We may also use your content to promote Medium, including its products and content. We will never sell your content to third parties without your explicit permission. This explicitly says you own your content, although Medium has some rights to do some things. And they won't sell it without permission, so unless Medium itself is publishing this book, it would seem to be copyright infringement. (Of course, I don't know what the TOS said when you originally wrote the article.) If what was copied was not copyrightable (like a quote from the Constitution, or a simple uncreative graph of something obvious) then it wouldn't be infringement. But your article was probably more than that.
The Harry Potter company and John Williams may or may not want credit, but they almost certainly want money. You have to get their permission, at least for their creations. In the case of Für Elise, you can freely use the original score to &quot;rework&quot; that piece, but you can't &quot;rework&quot; a version that is itself a recent &quot;reworking&quot; (known as a derivative work). Anything that Jon Williams created is protected by copyright, so you need to negotiate a license to create a derivative work, and he/they get to dictate the terms (like, half of the 69 cents per copy). That might include some attribution statement such as &quot;with permission, copyright Warner Brothers&quot;, or whatever is stipulated in the license agreement.
Copyright law is a country-by-country matter. Most countries are signatories to the Berne Convention, which provides a common framework, but there are still variations, generally in the duration of copyright or the definition of copyrightable material. According to the Hirtle chart, a video game that was first published in Europe in the year 2000 and subsequently published in the United States is still copyrighted in both the United States and whichever European countries it was published in. It is likely to be a work of corporate authorship, so the US copyright will expire on January 1, 2096 (unless a law extending the duration is passed). In the United States, the requirement to register a copyright was eliminated in 1989 as part of the Berne Convention Implementation Act; registration still provides benefits when filing a copyright-infringement lawsuit. Most European countries eliminated their registration requirements much earlier, if they had them at all: the Berne Convention dates from 1887. Copyright does not simply cease to exist when the owner does, or if the owner cannot be determined. The difficulty of tracking down copyright holders for old or little-known works is the driving force behind orphaned works legislation. There are no orphaned works laws in the United States, and since copyright is country-by-country, European laws won't help you if you're interested in publishing in the US. In order to track down the copyright holder, you'll need to figure out who originally held the copyright (probably the publisher, but it could be either development company, or both, or the game might be a collective work of the individuals who worked on it). If it was a work of corporate authorship, and none of the game-copyright sales mention it, copyright will have been transfered when the company owning the copyright was sold (as part of a general "and all intellectual property" clause).
Can he use another commercial product that is copyrighted, e.g. a map of a location (the map is a political map and has nothing to do with trees), for his tree research purposes, if such a map won't be part of the book he works on? Yes. Copyright protects particular expressions of ideas and knowledge, not the ideas and knowledge themselves. Using a map for research purposes when the map or a modified version of it does not appear in the final work does not make the final work a &quot;derivative work&quot; covered by copyright.
A book (or any other creative work) published in the 1800s is now in the public domain everywhere in the world (excepting odd cases like Peter Pan where a special rule applies in some jurisdictions.) Anyone may legally quote from such a work at any length with no legal requirement for permission. In fact there is no legal requirement to attribute the quote to the author (although there is an ethical requirement). In fact one may publish a new edition of such a work, unchanged or modified in any way one chooses, with no legal need to obtain permission from anyone or to pay any royalties or fees. If the work were recent enough to still be protected by copyright, a limited quote could be used under fair use, fair dealing or another exception to copyright under the laws of most countries. The exact rules vary by country, and are often highly fact-dependent, so the exact details will matter. If one wanted to quote enough from a recent work that permission is required, the copyright holder, who is often not the publisher, would need to grant permission. That is often the author or the author's heir, but it can be a person or firm to which the author transferred the rights. Sometimes the rights-holder can be hard to identify. Update: it would be possible for a work published in, say, 1890 by an author then young who lived to a fairly old age, dying in, say 1960, to still be protected in some countries, although not in the US. (Anything published before 1925 is now PD in the US.) But Charlotte Bronte died in 1855, and all of her work has long been in the public domain