Can I use yoda in my book

This depends on the specific details of your use. As noted, if you are merely referencing Yoda in your work as you describe then this should not be...

Is it legal to sell a scanned copy of a painting?

As noted, no, this would not be lawful to do. If you need further clarification here, I suggest that you consult with a lawyer in private and...

Obviously, we really can't offer much here without any details and because this is just a free and public Q&A platform you don't want to provide...

As a pro se non-attorney, may I directly contact the employees, former employees, and clients of an opposing party?

If you are the petitioner in this action maybe there is not that much to lose. But if you are defending it, going it alone might be a really bad...

Is my volunteer work product my property or the organisation's?

I think under this scenario there is little doubt that what was created was transferred to the organization under an implied license for them to...

Does having intellectual property rights in home country make any difference in how to get the same here in the U.S.?

It all depends on what country and what rights? Assuming you are taking this seriously, I suggest that you consult with a lawyer in private and...

The short answer is yes of course. The title to your comic book series is a trademark and many characters may also be serving as trademarks as...

Buying a product look alike and using a name of your owns. Is that illegal?

There are obviously a great many products that look similar and compete with no issue. Then there are those things that are protected by utility...

There is little doubt that what you are describing here would amount to IP infringement. "Fan art" is really just another way of saying "moderately...

Can I sell photographs with a copyright mark on the back?

As noted, selling the actual physical copy should not be a problem whatsoever. If you need further clarification, I suggest that you consult...