Closed adoption refers to an adoption process where there is no interaction of any kind between birth mothers and prospective adoptive families. This means that there is no identifying information provided either to the birth families or adoptive families. However, non-identifying information such as physical characteristics and medical history may be made available to those involved.
On June 1, 2009, Ontario, Canada, opened its sealed records to adoptees and their birth parents, with a minimum age of 18 for the adoptee, or one additional year if the birth parents initiate the request. Both parties can protect their privacy by giving notice of how to be either contacted or not, and if the latter, with identifying information being released or not. All adoptions subsequent to September 1, 2008, will be "open adoptions"
In all adoption searches, it is uncommon to find both the birth mother and father at the same time. A separate search, if desired, can be done afterwards for the father. Since males seldom change their surnames, and the mother might have additional information, it is usually easier than the initial search for the birth mother. In many cases, adoptees are able to do this second search for their birth father by themselves (or they try before paying for assistance).