Establishing Paternity: After 14 Years Another Man Claims to Be Father

My question involves paternity law for the State of Washington: My son and Daughter-In-Law had a baby 14 years ago. They got married a year later. Son signed birth certificate at time of birth. Now 14 years later, another man is wanting to claim paternity. Can he do this after 14 years? It is not right he wants to rock everyones world when he is not the father. His motive is unclear at this time.

Establishing Paternity: After 14 Years Another Man Claims to Be Father