English to Portuguese Law/Patents Law: Contract(s) agreement

Here's the exact context:

COPYRIGHT ASSIGNMENT AGREEMENT
This Agreement is made this...day of...2009
Between X
and Y
WHEREAS:
(A) X was commissioned by Y to create the work (the "Work") ...
(B) Z is the exclusive ownner of the copyright in the Work, as identified in ...
(C) X wishes to assign, and Y wishes to accept the assignment of, all Copyright...

This is the context. Other than that, WHEREAS is spelled all uppercase in the agreement, standing alone in a separate line.

Any ideas will be greatly appreciated. Thank you all in advance!