If something is "generic" then there can be a copyright question. Is it easy to know what is "generic" and what is copyright, for example an innovation can't be "generic" and have a copyright iiuc.
For example, if I make a website and then somebody sues me and says the code belongs to them, then they must prove that the code is not "generic" to have a copyright, unless it was already proven that the code had a copyright.
Did I understand correctly? This is not an actual case, I'm wondering what I can expect to claim copyright on for myself and others.
In my language we say "height of technology" e g that you must prove a "technology" to claim a copyright or a patent, but maybe the question is only about legal formalism since you can get copyright on almost anything (well maybe not code like "Hello World!").