constitute a defense or bar the specific enforcement 法律

[Chucha]

There is a piece of text which i don't understand at all. The full text is :

...to enjoin Consultant from engaging in any activity in violation hereof, all without the need of posting bond or any other security, and that no claim by Consultant against INC. or its subsidiaries, successors or assigns will constitute a defense or bar to the specific enforcement of Consultant’s obligations