17.23 Copyright-Affirmative Defense-Abandonment is a type of defense to a claim of copyright infringement. It is used when a person has abandoned or surrendered a copyright interest in an original work and therefore no longer has the legal rights to the work. There are two types of 17.23 Copyright-Affirmative Defense-Abandonment: Express Abandonment and Implied Abandonment. Express Abandonment is when a person explicitly relinquishes or abandons their copyright interest in a work. Implied Abandonment is when a person's actions or inaction indicate they have given up any claim of copyright in a work.