The plaintiff, Eleanor Schiessle, appeals from an order of the United States District Court for the Northern District of Illinois, Eastern Division, disqualifying her co-counsel, the law firm of Ross, Hardies, O’Keefe, Babcock & Parsons in this antitrust action. The question presented for review is whether, in light of our recent pronouncements on attorney disqualification, the district court erred in its determination that disqualification was required in this case. We hold that the rebuttable presumption rule adopted by this court in
Novo Terapeutisk Laboratorium, etc. v. Baxter Travenol Lab.,
I.
Eleanor Schiessle commenced this action in August of 1979 against eighteen defendants including Arthur Swanson, Carl Swanson and Paul Swanson (individually and as Arthur Swanson and Associates) alleging that various acts taken by the defendants to condemn and to redevelop property owned by the plaintiff in Rosemont, Illinois, violated, inter alia, federal antitrust law. The plaintiff retained the law firm of Ross, Hardies, O’Keefe, Babcock & Parsons (Ross) to represent her in this action, and Tobin Richter, a partner in the Ross firm, appeared on behalf of Schiessle in proceedings before the district court. On August 14, 1979, prior to an official appearance being filed on behalf of the Swansons, Michael King, at that time a partner at the Anto-now & Fink law firm, contacted Attorney Richter by phone asking that the lawsuit be dismissed as to the Swanson defendants. In a subsequent phone conversation two days later, Attorney Richter informed King that Schiessle would not dismiss the Swan-sons as defendants but offered that there was a possibility of settlement with the other defendants and that consideration would be given to taking the Swansons’ depositions at an early date. However, subsequent to the phone conversations between Attorneys Richter and King on August 30, 1979, Kenneth Lodge, of the law firm of Burke, Nash and Shea, Ltd., filed an appearance on behalf of the Swansons. Attorney Lodge remained as the Swansons’ attorney of record until October 19, 1979, when the district court granted his motion to withdraw from the case and to substitute Attorneys William Goldberg and Timothy Kocian of the Antonow & Fink firm as counsel for the defendant Swansons.
Attorney King left the Antonow & Fink law firm and joined the Ross law firm as a partner on October 1, 1979. Attorney King changed firms prior to the withdrawal of Attorney Lodge and the substitution of An-tonow & Fink as counsel for the Swanson *419 defendants. Antonow & Fink raised no objection to the Ross firm’s representation of the plaintiff Schiessle at the time Anto-now & Fink became counsel of record for the Swansons and did not object until nearly two years later. In August of 1981, Attorney Kocian of the Antonow & Fink law firm informed Richter of the Ross firm that if Schiessle refused to dismiss the Swansons as defendants, Antonow & Fink (Kocian) would inter alia, move to disqualify the Ross firm as counsel for plaintiff Schiessle on the ground that Attorney King had participated in the Swansons’ defense while at Antonow & Fink, thereby disqualifying the entire Ross firm from participating in the case on behalf of Schiessle.
The Ross firm refused to dismiss the Swansons and filed a motion with the district court in September of 1981, requesting a declaration of qualification as counsel for the plaintiff. In conjunction with that motion, the Ross firm filed affidavits of Attorneys King and Richter. In his affidavit, Attorney King averred that although he did some work on the present action on behalf of the Swansons during his affiliation with Antonow & Fink, he never filed either an appearance on behalf of the Swansons or an answer, nor did he conduct any “detailed investigation into the case.” In fact, according to King, he never met the Swan-sons. With regard to his contact with his case after he left the Antonow & Fink firm, he averred:
“Since the time I joined Ross, Hardies, I have, of course, not worked on the Schiessle case, have not filed an appearance, have not discussed the merits of the case, nor have I informed anyone of any conversations or information, if any, which occurred during my time at Anto-now & Fink. At this time, I know nothing of the merits of the case, have not worked on the case, have billed no time to Mrs. Schiessle, met Mrs. Schiessle, nor participated in any discussion of the merits of the case with her.
“Notwithstanding that I would not recognize the Swansons or Mrs. Schiessle if they walked into my office, I will continue as I have in the past to have absolutely no contact with the case.”
The Swanson defendants responded by filing a cross-motion for disqualification of the Ross firm. Attached to the Swansons’ cross-motion was an affidavit of Attorney Goldberg of the Antonow & Fink firm reciting (1) that during August and September of 1979 Michael King was the Antonow & Fink “partner in charge” of representing the Swansons in the antitrust lawsuit; (2) that on “four separate occasions [King] had conversations with Paul Swanson concerning [the] lawsuit;” and (3) that King had “numerous conferences concerning this lawsuit and the Swansons with other attorneys of Antonow & Fink.”
On June 29,1982, the district court granted the defendants’ cross-motion and disqualified the Ross firm as counsel for the plaintiff Schiessle in her action against the Swansons relying exclusively on the parties’ affidavits and without benefit of an evidentiary hearing. The district court, relying on
Westinghouse Elec. Corp. v. Gulf Oil Corp.,
II.
Questions of ethical propriety like those presented in this appeal have been addressed by this court within the past year.
See, e.g., Freeman v. Chicago Musical Instrument Co.,
The analysis outlined in our prior decisions concerning attorney disqualification comprises three steps. First, we must determine whether a substantial relationship exists between the subject matter of the prior and present representations. If we conclude a substantial relationship does exist, we must next ascertain whether the presumption of shared confidences with respect to the prior representation has been rebutted.
2
If we conclude this presumption has not been rebutted, we must then determine whether the presumption of shared confidences has been rebutted with respect to the present representation. Failure to rebut this presumption would also make disqualification proper.
LaSalle Nat. Bank,
In the case at bar, there is no dispute that the subject matter of the prior and present representations are substantially related — indeed the subject matter is identical as it concerns the same antitrust litigation. The only factor that has changed is that Attorney King is now a partner of. the Ross firm rather than the Antonow & Fink firm. Therefore, we find no difficulty in concluding that the representation involved is substantially related.
The second step in our analysis requires us to ascertain whether the presumption of shared confidences which arises from our determination that the representations are substantially related has been rebutted with respect to the prior representation. In other words, we must determine whether the attorney whose change of employment created the disqualification issue was actually privy to any confidential information his prior law firm received from the party now seeking disqualification of his present firm. The evidence presented to rebut this presumption must “clearly and effectively” demonstrate that the attorney in question had no knowledge of the information, confidences and/or secrets related by the client in the prior representation.
Freeman,
Lastly, the district court must determine whether the presumption of shared confidences has been rebutted with respect to the present representation. In other words, the court must determine whether the knowledge of the “confidences and secrets” of the Swansons which King brought with him has been passed on to or is likely to be passed on to the members of the Ross firm. In
LaSalle Nat. Bank,
We hold that the district court erred in relying on an irrebuttable presumption to find that confidences and secrets had been shared between King and other members of the Ross firm because our decisions in
Freeman
and
LaSalle
make it clear that the presumption of shared confidences can be rebutted.
LaSalle Nat. Bank,
We hold that at the time Attorney King changed firms he had knowledge of the Swansons’ case and that there were no “institutional mechanisms” in existence at the Ross firm to protect the sacrosanct privacy of the defendants’ attorney-client relationship. The
LaSalle
decision requires that when an attorney with knowledge of a prior client’s confidences and secrets changes employment and joins a firm representing an adverse party, specific institutional mechanisms must be in place to ensure that information is not shared with members of the new firm, even if inadvertently.
LaSalle,
III.
The order of the district court is Affirmed.
Notes
. This court’s most recent pronouncement regarding attorney disqualification,
Analytica, Inc. v. NPD Research, Inc.,
. The existence of a substantial relationship gives rise to a presumption of shared confidences.
See Novo Terapeutisk Laboratorium, etc. v. Baxter Travenol Lab.,
The present fact situation should be distinguished from that found in our recent decision in
Analytica, Inc. v. NPD Research, Inc.,
“There is an exception for the case where a member or associate of a law firm (or government legal department) changes jobs, and later he or his new firm is retained by an adversary of a client of his former firm. In such a case, even if there is a substantial relationship between the two matters, the lawyer can avoid disqualification by showing that effective measures were taken to prevent confidences from being received by whichever lawyers in the new firm are handling the new matter. See Novo Terapeutisk Laboratorium A/S v. Baxter Travenol Laboratories, Inc.,607 F.2d 186 , 197 (7th Cir.1979) (en banc); Freeman v. Chicago Musical Instrument Co., supra,689 F.2d at 722-23 ; LaSalle Nat’l Bank v. County of Lake,703 F.2d 252 (7th Cir.1983). The exception is inapplicable here; the firm itself changed sides.”
Analytica,
