the concept and realization of the joint works in iran and america law

literary and artistic joint works are prepared by two or more authors. it's importance, have increasingly grown today, particularly in academic areas. one of the issues related to these works is the problem of identifying the concept and realization of the joint works in the different legal systems which has similarities and differences. this research is a comparative study in mentioned issue in iran and america law. according to researches which have been done in the context of joint work, in iranian law, the joint work simply refers to works that contains inseparable parts of the various authors. but, in united states legal system even authors share interdependent parts, joint work can become exist. however, in both legal system, authors must intent to participate in making the work while the work is making. in american law, the intention of being a co-author is also needed.