Section 19 4 of the copyright act 1957 July 8, 2019 16 32 64 128 Section 19 4 and 19a of the copyright act 1957 Section 411(a) of the copyright act Section 107 of the 1976 united states copyright act Sections 107 or 108 of the 1976 united states copyright act Section 101 of the united states copyright act of 1976