A skilled copyright lawyer can assist a person in successfully applying for a copyright and in bringing a copyright infringement lawsuit. A copyright is generally issued for unique written materials such as a book, poem or article. Authors apply for copyright protection in order to preserve their financial and publication rights accruing from their work. A lawyer can assist the author of written work in the application process by helping to distinguish the work from other similar works that may already have copyright protection. A copyright lawyer may also be able to bring copyright infringement lawsuits, or defend their client against a copyright infringement lawsuit brought by another party. A lawyer who practices in this field is often called an intellectual property lawyer.