Selon Christian Neukirchen :
Intellectual property is not covered by copyright.
Incorrect. "Intellectual Property" is a deliberately confusing term used mainly by big corporations to cover all of copyright, patents, trademarks and trade secrets. So the so-called "intellectual property" of Ruby is definitely covered by copyright, and definitely not in the public domain.
But please don't use the term "Intellectual Property". Copyrights, patents, trademarks and trade secrets appeared independently, or not covered by the same laws and don't follow the same rules. Trying to put them together under one term is confusing, and leads even to really wrong things like calling copyright infringement "intellectual property theft", which is not only legally incorrect, but factually wrong.
Here's a short run down of why the term "Intellectual Property" has no menaing whatsoever and shouldn't be used:
- copyright is automatic (indicating it is good but not always necessary), and applies to the *expression* of an idea, i.e. an actual literary work, code source, music sheet, etc... It lasts for the life of the copyright holder + a certain amount of years (insanely large, last I head it was 70 years or something), and copyright infringement can only be found when it is proven that *actual* copying of the work happened (if another work looks very close to the copyrighted material, but was developed independently, it does *not* infringe). In court, the copyright holder has the burden of proving copyright infringement.
- patents need to be applied to, and cover the concept of a technical invention, and growingly ideas and concepts in general. They last 17 years in the US (IIRC). Patent infringement happens as soon as one uses a concept covered by a patent, *even* if that person developed it without previous knowledge of the patent or of the concept. In other words, patents are effectively temporary monopolies on ideas. In court, it is the burden of the defendant to prove they didn't commit patent infringement.
- trademarks need to be applied to, and cover names and titles of products. They protect brand recognition. They last as long as the product exists. Trademark infringement happens as soon as someone uses that same name to refer to a similar but different product (IIRC). The trademark holder is *obliged* to go against any trademark infringement. If they fail to do so, the trademark can be ruled invalid. It's a "everyone or no one" rule.
- trade secrets are automatic, and exist as soon as (and as long as) one keeps something secret in the composition and/or fabrication of a product. There is no specific legal protection to trade secrets. Any protection has to be done by the trade secret holder, usually by means of contracts called Non-Disclosure Agreements. Similarly, there is no such thing as "trade secret infringement". If someone bound by a NDA spilled the beans out, they can be sued for breaking a contract, but that's all. If the cat gets out of the bag in another way, the holder has no recourse whatsoever. Of course, in the case of source code for instance, that code is still covered by copyright, so it doesn't mean the spilled out beans go automatically in the public domain. The trade secret itself isn't protected though.
OK, I guess this wasn't as short as I wanted it to be. But when you read that, you must understand why a term like "Intellectual Property" is needlessly simplificating and confusing. The different forms of this so-called "intellectual property" apply to different things, are protected in different ways, for different durations, and infringing on them means something different for each of them.
So please, don't use that term. You're only confusing yourself, and others.
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Christophe Grandsire.
http://rainbow.conlang.free.fr
You need a straight mind to invent a twisted conlang.