What are the copyright terms on patents? Are patents (and the attached text, diagrams, images etc) covered by copyright? Or are they, by virtue of being published patents, in the public domain?
In the U.S. the text and drawings of a patent application/patent may be copyrighted by the author. If such protections are being claimed, the patent application must contain this authorization from 37 CFR 1.71 (d) and (e)- e) The authorization shall read as follows: A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.
Words cannot be copyrighted. Copyright law does not protect names, titles, or short phrases or expressions. Even if a name, title, or short phrase is novel or distinctive or lends itself to a play on words, it cannot be protected by copyright. The only intellectual property protection that might be afforded to such things is trademark.
Court filings are, in general, matters of public record. This does not automatically put them into the public domain. This will mean that, absent a special order of the court, anyone will be able to read this filing as pert of the court records. Many courts now make all or parts of their records available on the web. But the copyright holders will possibly retain their rights to authorize the making of further copies, and surely retain the right to authorize the making of derivative works, and their other rights that are part of the copyright bundle, such as the rights of public performance. These rights would not be retained if the work had been placed in the public domain.
The whole purpose of a patent is that the contents of the patent becomes public knowledge, in exchange for a time limited monopoly. Therefore you are allowed to do anything, since you are not just allowed but expected to examine the patent in order to improve on it, except that you need a license to sell or give away products implementing the patent as long as it is valid. The only thing to be careful about is that by publishing source code, you might be enticing others to infringe on the patent, so I'd recommend not to do that without advice of a lawyer. PS. With software, the interpretation of "making" software in patent law may be a bit surprising. There was a major case between Microsoft and AT&amp;T about that. The software developer isn't "making" the software. The build engineer putting everything together isn't "making" the software. The CD manufacturer making a million copies isn't "making" the software. The person installing it on their computer is the one who makes it.
No, it means you can't copy it. By default, the copyright to a work is owned by its creator, and nobody else is allowed to copy it, or create derived works, without their permission. That permission can be granted by a license. "License unknown" doesn't really tell us anything, but it certainly isn't clearly granting you permission. So you don't have permission to copy, and thus you cannot. You would have to seek permission from the copyright holder. See also If no licence is distributed with an application/source code, what license applies by default if any? (Some jurisdictions do allow for "fair use" exceptions, which allow you to copy a work without permission. You haven't said what jurisdiction you are in.)
Patents protect inventions, Copyright protects artistic or literary creation Software does not qualify for patents. In some jurisdictions but by no means most, algorithms and business processes can be patented. Software, both the literary (code) and artistic (UIJ) work, is protected by copyright which prevents copying the expression but not the idea. So software writers can take inspiration from other software but can’t copy it. So, things that look like copyright infringement often aren’t but things that look like patent infringement often are. Patents last for a short time (10-20 years) and take a lot of investment of time and money so their owners are incentivised to commercialise them quickly and on a large scale. Copyright lasts for a long time (life of the creator(s) + 50 years minimum depending on jurisdiction) and come into existence automatically. In general, it is easier to create a literary or artistic work than a novel invention. So, patent owners are more incentivised to protect their IP than copyright owners.
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
You would first have to find out if publishing a book was &quot;for commercial purposes&quot;. I can write a book and publish it as a hobby. Next you check if there is any copyright infringement. It doesn't sound like there is. Using your website as a tool to create these diagrams doesn't give you copyright unless the result contains your own copyrighted work. So at best there is a violation of your terms and conditions for your website. You can sue about that, but might have to specify damages. If you allow commercial use say for a fee of $1,000, that would give you grounds to claim damages. Or if someone used your website so excessively that it costs you money, that would be damages.