Phillips v. WCP Fund I LLC — Federal claims barred, D.C. claims remanded for jurisdictional review

Case
Solon Phillips, as Member-Trustee of Remus Enterprises, 1 LLC v. WCP Fund I LLC, Registered Agent, Corporation Service Company
Court
U.S. Court of Appeals for the D.C. Circuit
Judge
Walker; Childs; Rogers
Date Decided
September 29, 2026
Docket No.
25-7130
Topics
Res Judicata, Diversity Jurisdiction, Supplemental Jurisdiction, LLC Citizenship
Source
Read the full opinion

Background

Remus Enterprises, 1 LLC, a real estate developer, borrowed from WCP Fund I LLC to purchase and renovate property in the District of Columbia. After Remus failed to repay the loans on time, WCP foreclosed, purchased the property for $1,000, and listed it for sale at the same price at which Remus had listed it.

Before the foreclosure, Remus unsuccessfully sued WCP in D.C. Superior Court, and the D.C. Court of Appeals affirmed. After the foreclosure, Remus sued WCP in federal district court, asserting federal statutory and D.C.-law claims. The district court dismissed the federal claims and some local claims on res judicata grounds and dismissed the remaining local claims under Rule 12(b)(6).

The Court’s Holding

The D.C. Circuit affirmed the dismissal of the federal claims. Applying D.C. preclusion law, the court held that res judicata barred those claims because Remus had raised or could have raised them in the earlier D.C. litigation.

The court vacated the disposition of the D.C.-law claims because the district court had incorrectly analyzed diversity jurisdiction using the citizenship rules for corporations. An LLC’s citizenship depends on the citizenship of each of its members, and the necessary membership information was neither apparent from the amended complaint nor before the district court.

The court remanded for the district court to decide whether to dismiss the local claims after disposing of the federal claims, exercise supplemental jurisdiction over them, or determine that diversity jurisdiction exists and address them on that basis.

Key Takeaways

  • Res judicata bars claims that were raised or could have been raised in prior litigation between the parties.
  • An LLC takes the citizenship of each of its members for diversity-jurisdiction purposes; its formation and principal place of business do not control.
  • After the federal claims are dismissed, the district court must separately determine the jurisdictional basis and appropriate disposition of the remaining local claims.

Why It Matters

The decision underscores that federal courts cannot treat LLCs like corporations when assessing diversity jurisdiction. The record must establish every LLC member’s citizenship before a court may adjudicate state- or local-law claims on a diversity basis.

It also illustrates the limits of claim preclusion: although the earlier D.C. litigation foreclosed Remus’s federal claims, it did not excuse the district court from establishing subject-matter jurisdiction before deciding the remaining D.C.-law claims on the merits.

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