NEW YORK - The investment fund that owns bankrupt Lightsquared Inc. on Aug. 6 filed an adversary proceeding in the bankruptcy seeking at least $4 billion in damages against Dish Network Corp. and other entities affiliated with Dish Network, alleging fraud and other tortious conduct aimed at destroying the investment fund's rights related to its ownership of Lightsquared (Harbinger Capital Partners, et al. v. Charles W. Ergen, et al. $(In Re: Lightsquared Inc.$), No. 12-12080, Chapter 11, S.D. N.Y. Bkcy.).