This diversity case arises from the crash of a jet manufactured by Gates Learjet Corporation (Gates). The crash resulted in the destruction of the aircraft and the deaths of the five occupants: the owner of
Wrongful death actions were filed against Gates in federal district court in Georgia on behalf of the business associate and in state court in Michigan on behalf of all the occupants of the jet. The wrongful death actions proceeded to trial and the juries returned verdicts for the plaintiffs. The cases were settled pending appeal.
Following the conclusion of the wrongful death actions, Federal moved for partial summary judgment in the present case on the issue of liability. Federal relied on the results of the wrongful death litigation in Georgia and Michigan in claiming that offensive collateral estoppel should prevent Gates from litigating the liability issue in the present case. The district court granted Federal’s motion for partial summary judgment, and denied Gates’ motion to add a statute of limitations defense. We reverse the district court’s grant of partial summary judgment allowing offensive use of collateral estoppel and affirm the district court’s denial of the motion to add a statute of limitations defense.
I.
A.
In granting Federal’s motion for partial summary judgment, the district court apparently relied primarily on the Michigan litigation but considered Kansas, California and federal law to determine its collateral estoppel effect. We find that the district court erred in failing to apply Michigan law to determine the collateral es-toppel effect of the Michigan litigation. The Full Faith and Credit Statute, 28 U.S.C. § 1738, requires a federal court to apply the law of the state rendering the judgment to determine collateral estoppel effect.
Marrese v. American Academy of Orthopaedic Surgeons,
Under Michigan law, Federal cannot use collateral estoppel offensively to preclude Gates from litigating the liability issue. Collateral estoppel applies only where there is mutuality of estoppel.
Howell v. Vito’s Trucking and Excavating Co.,
According to Michigan law, a privy is one who after judgment acquires an interest in the subject matter affected by the judgment through a party, as by inheritance, succession, or purchase.
Howell,
B.
The district court also apparently relied on the Georgia litigation in allowing use of collateral estoppel; the court found that it was fair to apply collateral estoppel because Gates had two opportunities to litigate liability. Because the Georgia suit took place in federal court, our analysis of its preclusive effect differs from the analysis of the effect of the Michigan litigation, which was in state court.
In
Hayles v. Randall Motor Co.,
In
Erie R.R. Co. v. Tompkins,
We do not announce a broad rule regarding whether state law or federal law should determine the preclusive effect of a federal diversity court judgment. In this case, where the question is whether there is privity between the parties in different diversity suits, a federal court must employ state rules of privity. We agree that “the concept of ‘privity’ in
res judicata
doctrine reflects a distinctly substantive policy, because privity arises from ‘considerations going to stability of legal relationships— not unlike definitions of property.’ ”
Spiker v. Capitol Milk Producers Coop., Inc.,
Thus, in the present case, we apply Georgia law to determine the collateral es-toppel effect of the Georgia federal court litigation. Like Michigan, Georgia requires mutuality.
Norris v. Atlanta & West Point R.R. Co.,
II.
Gates alleges that the district court erred in denying Gates’ motion to amend its answer to assert a statute of limitations defense to Federal’s express and implied warranty claims. Leave to amend “shall be freely given when justice so requires.” Fed.R.Civ.P. 15(a). Whether to grant leave to amend is within the discretion of the district court,
Foman v. Davis,
In the present case, Gates failed to assert the statute of limitations defense until four years after the complaint was served. Gates contends it did not become aware of the defense until it conducted discovery after answering the complaint. The district court noted that at the time the lawsuit was filed Gates possessed documents from which it could have discovered and asserted the defense. The district court concluded that Gates’ delay was unreasonable and that allowing Gates to amend at such a late date would result in undue prejudice to Federal. Under the circumstances of this case, we cannot say that the district court erred in its conclusion. The district court did not abuse its discretion in denying Gates’ motion to amend its answer.
The judgment of the district court is affirmed in part, reversed in part, and remanded.
Notes
. We note that the circuits are split on whether state law or federal law determines the preclu-sive effect of a federal court diversity judgment.
Compare Answering Service, Inc. v. Egan,
