His works are now very old and in the public domain, so you are free to create derivative works from them. If you need clarification, I suggest...

Any images you use will have to have been first published prior to 1927 in order to be in the public domain. If you need clarification, I...

Any time you present a false association, sponsorship, endorsement or affiliation with another trademark owners or enterprise you can be liable for...

If your characters are based on theirs then this will be considered a derivative work for which a license will be needed. "Fan art" is really a...

Presumably, this would not be ripe for patent. The way recipes are often protected is by trade secret. Since trade secrets cannot be protected...

Your specific situation needs to be parsed out with a lawyer in private. It sounds like you might be describing a joint ownership; I'm not sure....

If this VODA FLASK is already registered, not that they need to be to enforce some rights, this will be an issue if you are also seeking federal...

You can be liable for trademark infringement when you present a false association, sponsorship, endorsement or other affiliation with another...

As noted, it will depend on the context. In some cases, there may be a fair use of the work if for example you are specifically commenting on it....

I suspect that patent is of more concern here than copyright, but it does depend. I suggest that you consult with a lawyer in private and...