That is a pretty broad question. Are you getting at something in specific? What rights do the publishers have on the sites where their ads are displayed? What rights do the publishers have with the ad serving company?
If you are referring to contractual obligations between you and the ad publisher have made with one another you should read the terms of your agreement. If you mean some 'rights' that supersede this you should get acquainted with your state and federal laws which may answer your question. If you want a higher authority you should read the UN charter of human rights. If you want a proper answer be more specific.