There was a case with building codes, where a LOT of cities had adopted some builder's association example codes, without change. So the building codes were copyrighted by the association, of course.

You could come LOOK at the codes, but not write them down or publish them to anybody else. This led to the case of the guy that posted all his local laws online being sued.

Fortunately, the judge said since ignorance of the law has never been a legitimate defense, it follows that preventing the law from being published is equally without defense and told the builder's association to suck it up.