Canada Business Corporations Act
Part I Interpretation and Application
Section 2(2)

Affiliated Bodies Corporate

For the purposes of this Act,

(a) one body corporate is affiliated with another body corporate if one of them is the subsidiary of the other or both are subsidiaries of the same body corporate or each of them is controlled by the same person; and

(b) if two bodies corporate are affiliated with the same body corporate at the same time, they are deemed to be affiliated with each other.