Is one free from legal responsibility if the intellectual property has passed the plagiarism check software? A few examples: Bob wrote a blog post and uses a plagiarism checker. The checker didn’t find any plagiarism. Does that protect Bob from copyright infringement claims? Bob uses AI to generate a blog post and passed the plagiarism checker. The AI company that provides the software has marketed to provide plagiarism free copies. Does that protect Bob from copyright infringement claims? Bob wants to register a trademark and uses the trademark search tool. The search tool didn't find any similar trademarks. Does that protect Bob from trademark infringement claims?
None of the methods suggested protect Bob from a copyright or trademark infringement claim. These methods may protect Bob from a claim that Bob is an intentional infringing party, as opposed to being an &quot;innocent infringer&quot;. But, an innocent infringer is not immune to liability for copyright and trademark infringement. Instead, an innocent infringer is simply subject to less potent penalties and remedies than an intentional infringer of the copyright or trademark owner's rights. Also, innocent infringer status ceases when Bob receives a cease and desist letter if Bob continues the infringing conduct. This said, in the first case, if Bob independently writes the blog post without copying anyone else's work, Bob has not infringed any copyright. This is true even if someone else had already written exactly the same thing. Copyright infringement, unlike patent infringement and trademark infringement, requires that the infringing work actually be derived from the work claimed to be infringed and independent invention of a work is a full defense to copyright infringement.
Ideas are not subject to copyright protection. See 17 USC 102: In no case does copyright protection for an original work of authorship extend to any idea, procedure, process, system, method of operation, concept, principle, or discovery, regardless of the form in which it is described, explained, illustrated, or embodied in such work If you want protection, keep your ideas to yourself and create a concrete expression in the form of a program, which is protected by copyright.
The quote in the question and the question text both imply that what is protected by copyright is &quot;creative effort&quot; or &quot;creative value&quot;. In united-states law at least, the test is &quot;originality&quot;. In many, probably most, cases these will be the same. But there can be things with &quot;creative value&quot; that are not considered original enough for copyright protection, or in some other way are not subject to copyright protection. Individual words or short phrases such as the titles of works are not protected by copyright, even if they have creative value, for example. An improvised song or dance that is not recorded is not protected, however creative it may have been, because it was not &quot;fixed in a tangible form&quot;. However, a hash computed from a text is indeed a fact, just as a statement of the number of characters the text contains, and it would not be protected by copyright. The hash algorithm might or might not be protected by patent, and the code to a hash program might be protected by copyright. But the resulting hash value will not be protected by either.
I know of no cause of action related to &quot;misrepresentation of intellectual property&quot; (I believe it may be a phrase used colloquially in the context of academic integrity). If such a cause of action exists, I'll leave it to another answer to discuss. This answer approaches your question through the lens of copyright infringement and moral rights. A reproduction is an infringement if it substantially reproduces the original. Short quotes, properly attributed, will often be fair use, even if exactly reproduced. If an exact reproduction is not an infringement (e.g. because it copied too short a phrase) or if it is fair use, then a slightly altered reproduction a fortiori would also not be an infringement or would be fair use. In jurisdictions that recognize moral rights, there may be circumstances where an alteration, even to spelling, would be a violation of an author's moral rights. But to make out a violation of an author's moral rights based only on a spelling alteration, the spelling would have to be critical to the integrity of the work (e.g. perhaps the choice of dialect) and the alteration would have to be prejudicial to the author's honour or reputation.
Yes and no. [note, the following is all written about US law. In other jurisdictions laws are, of course, different (though usually not drastically so.)] In the US there are (at least) three different bodies of law that might apply to code: copyright, patents, trade secrets. Copyright covers original expression. Anything you write is automatically, immediately protected under copyright. The copyright applies to the code itself, and anything "derived" from that code. It's up to the courts to decide exactly what "derived" means. One case that's long been viewed as a landmark in this area is Gates Rubber v. Bando Chemicals. The Court of Appeals for the tenth Circuit decision includes a section titled: "The Test for Determining Whether the Copyright of a Computer Program Has Been Infringed." Note that you can register a copyright, and that can be worthwhile, such as helping recover some damages you can't otherwise. Patents are quite different from copyrights. Where a copyright covers expression of an idea, a patent covers a specific invention. Rather than being awarded automatically, a patent has to be applied for, and awarded only after the patent office has determined that there's no relevant prior art to prevent it from being awarded. A patent, however, covers things like somebody else independently discovering/inventing what's covered by the patent. A trade secret could (at least theoretically) apply to some process or procedure embodied in the code. A trade secret mostly applies to a situation where (for example) you're trying to form an alliance with some other company, and in the process tell them things you don't tell the general public. If you've identified the fact that what you're telling them is a trade secret, and they then tell a competitor (or the general public, etc.) or more generally use that information in any way other than the originally intended purpose, it could constitute a trade secret violation. As a side-note: patents and copyright fall under federal law, so they're basically uniform nation-wide. Trade secrets mostly fall under state law, so the exact details vary by state. Absent a reason to believe otherwise, I'd guess your interest here is primarily in copyright infringement. The key here would be showing that one piece of code was derived from the other. That is, it specifically would not apply in a case where there were only a limited number of ways of doing something, so anybody who wanted to do that had to use one of those ways. Since this would not indicate actual derivation, it would not indicate copyright violation.
This kind of piracy is unfortunately common. When your copyright has been violated, your available response is to sue the infringer. Yes, this costs money, and yes, many infringers get away with it. In the Free Software/Open Source community, a couple of actors including the FSF, gpl-violations.org/Harald Welte, and the Software Freedom Conservancy have sued GPL infringers. But they can only do that for copyrights that they hold themselves. For example, the FSF holds copyright for the GNU userland, whereas Welte and Conservancy hold copyright for parts of the Linux kernel. They do not hold copyright for your software so they cannot enforce the AGPL license on your behalf. What can be done fairly easily is to file a takedown request with platforms that host the infringing content. Under various safe harbor laws including the US DMCA, a platform is not responsible if they accidentally host infringing content uploaded by users. However, the platform has to take the content down if they're notified that the content is infringing. For example, you could file a DMCA takedown request with GitHub to take down their repository, in case they are using GitHub. The drawback is that a takedown notice can be contested by the alleged infringer, in which case the content is reinstated and you would have to sue. The platform is not allowed to make its own determination about whether you or the infringer is right.
A fundamental principle of copyright law is that protection is only afforded to the concrete expression, and not the abstract idea. Therefore, if you write a sort program, what is protected is &quot;that specific program&quot;, and not the general idea of a sort program. There are many kinds of sort algorithms: if you write a bubble sort program, you don't &quot;own&quot; all bubble sort programs, you only own the one that you wrote. If you sell your right to a particular bubble sort program, you don't thereby prevent yourself from writing another bubble sort program. But, technically, you do prevent yourself from copying that program, changing some variable names or maybe manually recoding a couple of lines, and re-licensing the code (assuming that you fully transferred copyright, or gave the customer exclusive rights to the code). The basic question that the courts will ask is &quot;did you copy that program&quot;, which they answer by looking at the similarity between the two programs. All bubble sorts have a necessary similarity. To prove infringement, the plaintiff would (ultimately) have to prove that the similarity had to have come from copying rather than independent coincidental re-creation. Functional considerations and general programmer practice would tend to weigh against an allegation of infringement in certain cases, where &quot;counter&quot; is a common name for a counter variable, and bubble sort is a well known algorithm with limited practical differences in lines of code. The hard part is establishing that it would be natural for such similarities to exist even when independently coded by a single person. It may be common practice to take a program that you've sold and tweak it in some fashion, but that is copyright infringement, whereas &quot;applying the lessons that you learned in writing X to a new program&quot; is not infringement, it is using the same ideas, and the ideas are not what is protected.
First of all, &quot;plagiarism&quot; is more of an academic than a legal term. It means using another's work without proper credit, and particularly in a way that falsely makes it appear to be ones own work. This is severely criticized in academic and journalistic circles, and may result i a person losing a job or being expelled from a degree program, but it is not in and of itself a legal issue. What a court is concerned with is copyright infringement. Some things are plagiarism but not copyright infringement. For example, copying without acknowledgement from a work written two hundred years ago might well be plagiarism , but would not be infringement because the soruce is not protected by copyright. i can, for example copy from the music of Bach all that I want, because it is long out of copyright. On the other hand, if I copy a recent work without permission but properly attribute my source, it is not plagiarism, but may well be copyright infringement. When faced with a claim of copyright infringement, a US Federal court will look at several things. First of all, it will check if the copyright has been registered within eh copyright office. Under US law, one must registered before bringing a copyright suit. If there has been no registration, the suit will be dismissed. The court will also consider evidence of similarity, unless the defendant admits copying. Usually if this is disputed there will be expert testimony that the similarity is so great that simple coincidence cannot explain it. Thsi will consider the notes, the duration of each tone, rhythm, chords, keys, and other musical elements. To establish copying there should normally be a significant similarity over an extended passage at least. I have read of cases where similarity of a passage 35 notes long was enough to m establish copying. But there is not clear cut rule on this. A passage just a few notes long could be identical by accidental recreation, and will not generally prove copying. The court will also consider evidence of access. The plaintiff will often introduce evidence showing that the alleged infringer had access to a copy of the source work. This is not absolutely essential, but is very helpful to the plaintiff's case. The court can also consider claims of common source. If the defendant says that the allegedly infringing work was in fact based on an older work now out of copyright, which the plaintiff's work was also based on, that would tend to defeat a claim of infringement. The court might also consider claims that the alleged source work was not in fact original and should not have copyright protection. And if the defendant admits copying, but claims that this was a fair use of the source work, the court will analyze the statutory dour factors, and possibly other relevant factors to determent whether this is valid fair use or not. This is where claims of &quot;influence&quot; tend to be resolved. There is no clear cut set of criteria for how much copying is allowed. I have not followed the links, because I am not a musical expert and my judgement of the degree of similarity would not be meaningful, and even if it were, the degree of similarity alone would not prove whether there has been infringement. Note that it is also possible that one of these composers has actually gotten permission from the other, perhaps in return for a fee, to use part of the other's work. In that case there would be no infringement, as long as there was permission. The book My Life in Court by Louis Nizer has a detailed description of a successful suit for infringement of a copyrighted song, the so-called &quot;rum and coca-cola&quot; case (Baron v. Leo Feist). The book describes in detail the evidence presented by plaintiff and defendant. See also the Music Copyright Infringement Resource provided by The George Washington University Law School &amp; Columbia Law School, which lists many cases of alleged copyright infringement of music, from 1844 to 2021, giving results and excerpts of court opinions as well as other information about each case.