1.3 The Erie Doctrine, Plausibility Pleading & Preclusion

🎯 Essential Doctrinal Takeaways

• Under Hanna v. Plumer, if a valid Federal Rule of Civil Procedure directly answers the question in dispute, the Federal Rule governs over state law.
• Under Twombly and Iqbal, legal conclusions are disregarded; factual allegations must establish a plausible (not merely conceivable) entitlement to relief.
• Under Rule 56 and Celotex, a moving party may satisfy its burden by identifying an absence of evidence supporting an essential element.
• Claim preclusion (res judicata) bars all claims arising from the same transaction or occurrence; issue preclusion permits nonmutual offensive use under Parklane.

Under the Erie doctrine, federal courts sitting in diversity apply state substantive law and federal procedural law. When an alleged conflict arises between state law and a Federal Rule of Civil Procedure, courts apply the Hanna v. Plumer framework: if the Federal Rule is valid under the Rules Enabling Act (28 U.S.C. § 2072) and constitutional due process, the Federal Rule governs, regardless of contrary state practice.

Pleadings in federal court are governed by Rule 8(a)(2). Under Bell Atlantic v. Twombly and Ashcroft v. Iqbal, the Supreme Court retired the old Conley 'no set of facts' standard. Courts apply a two-pronged approach: first, strip away all bare legal conclusions and recitals of elements; second, evaluate whether the remaining factual allegations state a plausible claim for relief.

Preclusion doctrines ensure the finality of judgments. Claim preclusion (res judicata) bars relitigation of all claims that were or could have been raised arising out of the same common nucleus of operative facts (transactional test). Issue preclusion (collateral estoppel) prevents relitigation of specific issues actually litigated, determined, and essential to a valid final judgment.

⚠️ NextGen Bar Examination Traps & Pitfalls

• Applying the outcome-determinative test when an on-point Federal Rule of Civil Procedure controls the issue.
• Assuming notice pleading allows complaints consisting solely of conclusory allegations of discrimination or wrongdoing.
• Allowing a plaintiff to split property damage and personal injury claims arising from a single collision.