In general, you are free to buy an item then lend some artistic contributions to it and resell it. A good example might be taking a generic denim...

This will be considered creating a derivative work for which a license will be required otherwise it's infringing. If you need clarification, I...

You could be violating their right of privacy and publicity, which are state governed laws that vary. These kick in when one uses the name, image...

We can't really parse this all out from here, so you really need a proper evaluation. But it sounds like you are saying that the works in question...

My colleague explained well the situation with LEGO. You need to be sure you are not presenting a false association with them in any way....

Can I send a cease and desist letter to a company that copied my name in the auto repair industry in my local town?

Before you make any contact with them, you should really have the situation properly evaluated. I suggest that you consult with a lawyer in...

Your use, presumably, is not a trademark use rather is it ornamental use. As noted, the context matters. Just because the famous company Apple owns...

We will need to review their terms and all the facts and circumstances surrounding your situation. As noted, anyone can be sued for pretty much...

Do I have to cite my sources in a self help course I'm writing and on my self help blog?

As noted, the general ideas cannot be claimed. If you are taking large amount of content from somewhere else that is different. If you have...

There really is not much we can add here that will be helpful. As noted, these issues of IP ownership can be sticky. Before you take any...