Easy. Cut the patent attorney outfit a reasonable part of the fees to be derived (like a contingency deal). This way, no out of pocket money, and the attorney outfit is adequately incentiveized. I would push to have EDIG receive all royalties to limit ties to the attorney outfit (TPL?). Only problem there is that the patent attorney outfit would have little incentive to negotiate for royalties, but rather a one time big licensing fee. But it would still be my preference.... Either way is good.
Again, JMHO, and I KNOW nuttin`!
SGE