Section 9 — Copyright Act: Cases of joint authorship

In the case of a work of joint authorship, except as provided in section 6.2 or subsection 7(1) or (3), copyright subsists during the life of the author who dies last, for the remainder of the calendar year in which that author dies, and for a period of 70 years following the end of that calendar year, and references in this Act to the period after the expiration of any specified number of years from the end of the calendar year of the death of the author shall be construed as references to the period after the expiration of the like number of years from the end of the calendar year of the death of the author who dies last.