'To have control of litigation requires that a person have effective choice as to the legal theories and proofs to be advanced in behalf of the party to the action. He must also have control over the opportunity to obtain review.' Hardy v. Johns-Manville Sales Corp., 681 F.2d 334, 339 (5th Cir.1982). (quoting Restatement (Second) of Judgments 39, comment c (1982)). Examples of the 'control' necessary to preclude a nonparty are: the president and sole shareholder controls his company; a parent corporation controls its subsidiary; Freeman v. Lester Coggins Trucking, Inc., 771 F.2d 860, 864 (5th Cir.1985) n. 3; a liability insurer assumes control of a defense; and the indemnitor defends an action against an indemnitee. 18 C. Wright, A. Miller & E. Cooper, Federal Practice and Procedure § 4451, at 430-31 (1981). However, 'lesser measures of participation without control do not suffice. Thus it is not enough the nonparty supplied an attorney or is represented by the same law firm; helped to finance the litigation; appeared as an amicus curiae; testified as a witness; participated in consolidated pretrial proceedings; undertook some limited presentations to the court; or otherwise participated in a limited way. Even a ...