The United States Copyright Office requires applicants to disclose the use of AI in the creation of a work if AI was used to create an appreciable amount of the work. When disclosure is required, it is necessary to also describe how it was used in the creation of the work, and to describe the human author’s contribution to the work. The general rule is that you do not need to disclose de minimis use of AI, but you must make an AI disclosure if more than de minimis AI-generated expression appears in the work in which you are claiming copyright or in your deposit copy. Copyright may only be claimed in the human contribution to the work.