My husband and I live in Indiana and have been married a few years now. I adopted his son in 2006. He is now 7 years old. My parents are threatening to sue me for visitation rights. Can they do that? I thought that step-grandparents didn't have rights? Does the adoption, which made me a legal parent, make them legally grandparents? Wouldn't they have to wait until my husband and I to divorce to get rights?