However Hatcher states that copyright law in the United States -- the frame of reference for most online discussions of fansub legality -- construes translations as derivative .
Fansubs infringe on the author 's right to prepare derivative works and to reproduction by copying original source material .
However Hatcher states that copyright law in the United States -- the frame of reference for most online discussions of fansub legality -- construes translations as derivative , and fansubs infringe on the author 's right to prepare derivative works and to reproduction by copying original source material .