This is a question for a friend, who was working with a friend. Made artwork for promoting their business. They paid him for that work, but failed to inform him they would proceed with that design to make shirts. He didn't claim they had 100% rights on the artwork.. but It was a verbal agreement. But he feels he is entitled on proceeds from the shirt sales...
I'm looking for more information in this area --- legalities/ links/ more info.. to see if he may have a case.
Or even ways of creating a formal letter, informing the business owner about the agreement- and breech of verbal conditions
Can he be compensated with past net profits?
-Thank you, in advance, for you help