Does my being a grandparent or close relative give me the legal right to file suit for possession, access, or custody of grandchildren or other children that I am related to?
It depends. Depending on the rights being sought, there are other requirements which must be met before you have the right to file suit against the will of the parent(s). The requirements to allow for a suit seeking managing conservatorship (custody) are much more stringent that if just seeking Possessory Conservatorship (visitation) or access. It is critical to understand that the right to sue is different than what rights you can sue for.