I get that it is hard to say how derivative something is. There are certainly cases where this is hard to say. However, there are also cases where it is quite

I get that it is hard to say how derivative something is. There are certainly cases where this is hard to say. However, there are also cases where it is quite black and white where much effort was expended to come up with a particular design. What do you say about such cases, especially if it is an individual who doesn't have the resources to roll their own copy protection scheme?