1. to determine or establish the paternity of a child; to assign a child to a father
Usage: legal/formal; often used in family law contexts
2. to affiliate or connect as a branch or subsidiary
Usage: formal; less common than 'affiliate'

Examples

• The court was asked to filiate the child and establish child support obligations.
• DNA testing helped filiate the biological father in the paternity case.
• The company sought to filiate its new subsidiary with the parent corporation.
• Legal proceedings were initiated to filiate the infant to the alleged father.
• The organization decided to filiate the regional office under the main headquarters.