MEMORANDUM
Microsoft has filed a motion requesting that I certify for interlocutory appeal the order I entered on April 4, 2003, granting plaintiffs’ Rule 16(c) motions for preclusive effect with respect to certain findings of fact entered by Judge Jackson in United States v. Microsoft.
Certification for an interlocutory appeal is proper where: (1) the order to be appealed involves a controlling question of law; (2) there is substantial ground for difference of opinion on that question of law; and (3) an immediate appeal from the order may materially advance the ultimate termination of the litigation. 28 U.S.C. § 1292(b). I find that each of these factors is satisfied here. Accordingly, I will grant the motion in order to give the Fourth Circuit an opportunity to determine whеther to consider on interlocutory appeal my ruling that facts found by Judge Jackson that were supportive of (rather than indispensable to) the liability judgment against Microsoft in the governmеnt case should be given collateral estoppel effect in the cases encompassed in this MDL proceeding.
My collateral estoppel ruling clearly is not “controlling” of these proceedings in the sense that it is substantively disposi-tive of their outcome. However, the ruling does control many aspects of the proceedings in substantial respects, particularly the scope of the discovery now underway in the four competitor cases and the scope of the evidence of the trial in the consumer class action (now scheduled to begin in September 2003). I am satisfied that this constitutes a sufficient basis for me to certify my ruling for an interlocutory appeal.
See
19 James Wm. Moore et al.,
Moore’s Federal Practice
¶ 203.31[3] (3d ed.2003) (a controlling quеstion of law is onfe that “has the potential of substantially accelerating disposition of the litigation”);
McNeil v. Aguilos,
B.
I am satisfied there is a substantial basis for a difference of opinion on the meaning of the phrase “necessary tо the judgment,” as it is used in determining collateral es-toppel effect. That is particularly true in these proceedings in light of the conclusion rеached by Judge Kollar-Kotelly in
New York v. Microsoft Corp.,
Providing the Fourth Circuit with the opportunity to determine whether to grant an interlocutory appeal on my collateral estoppel ruling may also materially advance the ultimate termination of the litigation. As I have previously indicated (and as is obvious), my ruling is foundational to the structure within which this MDL litigation will be conducted, defining both the scope of evidence at the trial of the consumer class action and the scope of discovery in the competitor cases. There would be a sеnseless waste of private and public resources and an unconscionable delay in the final resolution of these proceedings if the Fourth Circuit were not given the opportunity to decide the collateral estoppel issues on an interlocutory appeal and ultimately were to find I had erred in my ruling.
I also consider it relevant that this is an MDL proceeding. The Fourth Circuit has stated in another context that in multi-district litigation “[e]ven accounting for the peculiar facts of each case, it is clearly more efficient to provide for review by one аppellate court in one proceeding rather than leaving open the possibility that [the trial court’s] decisions could be reconsidered by each of the transferor courts .... ”
In re Food Lion, Inc.,
In sum, I find that the three prerequisites for certifying an interlocutory appeal under 28 U.S.C. § 1292(b) are satisfied and that it is in the public interest for the Fourth Circuit to be given the оpportunity to decide whether now to review my collateral estoppel ruling.
Notes
. In opposing Microsoft's motion, plaintiffs rely heavily upon an unreported Fourth Circuit decision,
Fannin v. CSX Transportation,
. By mentioning Judge Kollar-Kotelly’s conclusion in this regard, I do not mean to suggest I erred in my collateral estoppel ruling. The monumental task confronting Judge Kol-lar-Kotelly was to tailor remedies to the specific liability findings of the D.C. Circuit. In performing that task Judge Kollar-Kotelly (quitе appropriately, in my judgment) in effect determined which of Judge Jackson's factual findings were indispensable to the Court of Appeals' liability findings. Had she not done so, the cloth would have been cut too broad. Judge Kollar-Kotelly was not, however, asked to resolve the different questiоn of how to define the meaning of the phrase "necessary to the judgment” for collateral estoppel purposes or of detеrmining what facts were supportive of the judgment in the government case (if "necessary to judgement” means, as I have found, "supportive of” it). Thosе are the issues presented here, and they require a different analysis and raise different policy concerns. Giving collateral estoppel effect in
