Assignment — partial assignment
139.  An assignment of copyright may be limited, but only in one or more of the following ways:
(a)to some but not all the types of acts comprised in the copyright;
(b)to a part but not the whole of each type of act comprised in the copyright;
(c)to a part of the whole duration of the copyright;
(d)in the case of copyright in sound recordings — to the whole or a part of the right to be paid equitable remuneration under section 121(b).