Is this some kind of joke? In a classic story drawn (if not written) by Marshall Rogers, the Joker tried to assert IP rights to fish he poisoned with Smylex. (According to this site, Rogers died at Holy guano.
Injustice: Gods Among Us: Year Five As Batwoman is about to expose Superman's killing spree to the world, an old ally returns to the Regime to help. Later, Batman reveals a crucial bit of information to Luthor.