Why does digital copyright appear to be less effective than physical copyright? I frequently hear on the news about enforcement of patent infringements on physical products, such as various types of wrenches, machinery, and toys. However, I cannot recall a situation where an online business has been sued for creating a product that is almost identical to another product. For example, in the case of video game app offerings for phones, whenever a new trend emerges, a multitude of copycat products seem to follow. Initially, I thought this was because the rate of ripoffs is so high that the original creators are unable to file claims as quickly as new copies appear. However, I have also observed that large corporate groups, such as Ketchapp and Voodoo, often have entire portfolios consisting of slightly modified versions of popular products created by competitors. It is difficult to understand how this is feasible, and copyright law for digital services seems to be less effective than for physical products. Please keep in mind, I am not from a legal background and am simply curious about this.
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.
What you are missing is that the original copyright holder can give permission to make derivative works with strings attached. There is no automatic right to derive something from a copyrighted work. Those strings could include constraints on what you create in the process of making the derivative work. Yes it is a string limiting what you can do with something you own, but you would have been warned in the license and had the choice to start from scratch. People do create work-alike software with no copyright strings using two teams and a &quot;clean room&quot; design process. It is a lot harder than modifying something another person has developed. Also, law and someone's understanding of morals need not be aligned at all. And, in patent law, just creating something all by yourself from scratch does not give you ownership. If someone else did it first and got a patent you can't make the item you might think you own. IP law is complex and looking for &quot;fundamentals&quot; may not get you anywhere.
Copyright infringement requires that you actually copy elements from an earlier work produced by a different author. If you created a similar, or even identical, work independently, it is not copyright infringement. When considering whether or not infringement has occurred, the court is likely to consider whether the defendant could reasonably have had access to the plaintiff's work. If the court finds that they could have, then the defendant would be required to produce evidence of original authorship. Consider the My Sweet Lord/He So Fine case, where the court found the defendant had subconsciously copied the plaintiff's song. Had Harrison been able to produce evidence of original authorship, the judgment could have been different. In your example, it is unlikely that an suit in copyright infringement could be decided against you, as you've stated the text is generated randomly. However, more evidence of this randomness might be required to support your case. Of course, whether a computer or automated process can produce works independently is still questionable; I'm not aware of cases that have tried this. The US Copyright Office has said that Works produced by mechanical processes or random selection without any contribution by a human author are not registrable. Of course, whether this has a bearing on your particular scenario is undecided, and I'm not sure how it would be decided. It is almost certain that the worst case outcome would be an injunction requiring you to cease publicising the product, or perform reasonable checks prior to publication to ensure that the product of your program infringes on works; it would be unlikely that you would have costs ordered against you, especially if the program is truly random, and the random text was given as much, or more, publicity than the coherent text.
If you use the reviewer's code, or code derived from it (e.g. if you just changed a variable name) then they own the copyright on that part of the software. If the reviewer describes a solution which you implement, or if you re-implement the code from scratch while taking ideas and methods from the reviewer's code, then you own the copyright on that code. However if there are only a few ways to implement something in code then the code is not creative and hence cannot be copyrighted. For example the regular expression in the question you link to is (as far as I can tell) the only correct solution to the problem: any programmer addressing the problem will have come up with that RE. In this the position is akin to a database of phone numbers: while the collection may be copyright (depending on whether selection or arrangement required creativity), the fact that Alice Jones has the number 012345 is not copyrightable, and neither is the alphabetical arrangement of names. Where it gets messy is the boundary between the two. The requirement to detect 4 or more repeated digits in a credit card number could be implemented in a number of ways, but whether there are enough of these to qualify any particular solution as "creative" would be a matter of fact for a court to decide.
Summary from comments. (Hat tip @jqning) Daniel Nathan Ballard writes here: [It] is not only improper it is UNLAWFUL and may result in serious repercussions... Such a misuse may constitute false advertising... (“It is no doubt true” that affixing the ‘Trade Mark Registered U.S. Patent Office” notice on goods that are not protected by a federally registered trademark creates “a prima facie case of fraud against the public… .”). ... Such use is also a form of “unclean hands” that can bar the user’s registration of the mark. ... Such a use may also bar the maintenance of an infringement case. ... And the fraudulent use of the trademark registration symbol DOES provide other marketplace participants with standing to oppose the user’s registration of the mark. http://www.avvo.com/legal-answers/use-of---symbol-but-not-federally-registered-1125746.html
Don't get hung up on unauthorized resale. That only prohibits unauthorized resale. Authorized resale is ok. From http://www.justice.gov/usam/criminal-resource-manual-1854-copyright-infringement-first-sale-doctrine: The first sale doctrine, codified at 17 U.S.C. § 109, provides that an individual who knowingly purchases a copy of a copyrighted work from the copyright holder receives the right to sell, display or otherwise dispose of that particular copy, notwithstanding the interests of the copyright owner. The right to distribute ends, however, once the owner has sold that particular copy. See 17 U.S.C. § 109(a) &amp; (c). Since the first sale doctrine never protects a defendant who makes unauthorized reproductions of a copyrighted work, the first sale doctrine cannot be a successful defense in cases that allege infringing reproduction.
Fair use is a four-factor test. Whether the use is commercial is part of just one of the four factors. Fair use is determined on a case by case basis, and it would be rather silly to assume that everything a user could post would be covered by fair use. Rather than just rely on the possibility of fair use, you may want to utilize the DMCA protections. Doing so can protect you from copyright liability for the user-generated content. You will have to register a DMCA agent, and expeditiously respond to takedown notices and counternotices.
Not having immediate access to the source doesn't preclude a finding of copyright infringement. If you have seen the source material, subconscious infringement can happen. However, in this example, both the short phrases doctrine and the merger doctrine would likely prevent the is_prime function from having copyright. Words and short phrases are not individually copyrightable, so the name would be free to take. Regarding the implementing code, if it isn't an exact copy (i.e. copy and paste), courts will apply the abstraction-filtration-comparision test. They may find that you took the selection and arrangement of instructions from the original source, albiet using different names. That selection and arrangement would probably be considered a substantial similarity and, if not for the merger doctrine, infringement. However, given the limited number of ways to express the prime-detection algorithm means that the expression of that idea has merged with the idea, and thus is not protected by copyright. (Or in some jurisdictions, merger is a defence to infringement rather than a bar to copyrightability).