Wiktionary
intercorporate
a. Between corporations.
Usage examples of "intercorporate".
Moorhead and intercorporate political machinations were abruptly forgotten.
Why, think of the advantage in international and intercorporate negotiation!
Nietzsche and Mao Tse-tung: Psychophilosophical Applications to Intercorporate Politics.
Contrary to what you have been told, this is not simply an intercorporate struggle.