Yes. For the father to get legal custody he has to go to court and petition for it after he has proved paternity. If he has had the child for the past 18 months, this should not be a problem.
yes.
mother has sole custody even if living with father
You have to get a lawyer and file for custody. There are some agencies that can provide free legal counsel, contact your local child protection service.
file for custody in state of childs residence
Laws can vary from state to state and by case to case. A mother can get custody if she is on depression medication, but it is best to seek the advise of a lawyer.
yes
Yes she does.
if they have you in custody, yes they can
You must petition the court that has jurisdiction and present argument and evidence to demonstrate to the court that your gaining custody of the child is in the child's best interest. In the state of Washington, if the parents are unmarried the 'tender age' doctrine suggests that the mother will usually have an advantage in a custody dispute ceteris paribus. If the parents have been married they begin on a even playing field in the event of a dispute. Experienced and affordable family law attorneys in Washington state can help you develop your case and maximize your chance of success. For a free consultation and quote call 800 245-1494.
The mother. The father have to petition the court for shared custody.
No
Once a child is in state custody I don't think the mother has a say in who adopts the child. However, you may be allowed to meet the adoptive parents.