A copyright owner is someone who creates an original, creative work, and fixes it in a tangible medium of expression. For example, you might compose an original poem and type it in a computer. You are the copyright owner because you fixed an original, creative work (the poem) in a tangible medium (the computer’s disk).
The author of a work can transfer some or all of their rights in writing to someone else, making that person a copyright owner.
If you’re unsure whether or not you’re a copyright owner, please consult an attorney.