Royal Canin U.S.A., Inc. v. Wullschleger

Royal Canin U.S.A. v. Wullschleger
Supreme Court of the United States
Argued October 7, 2024 Decided January 15, 2025
Full case name	Royal Canin U.S.A., Inc., et al. v. Wullschleger et al.
Docket no.	23-677
Citations	604 U.S. ___ (more)
Argument	Oral argument
Decision	Opinion
Holding
After a deletion of all federal claims deprived the district court of federal-question jurisdiction, the suit became one for a state court.
Court membership
Chief Justice John Roberts Associate Justices Clarence Thomas · Samuel Alito Sonia Sotomayor · Elena Kagan Neil Gorsuch · Brett Kavanaugh Amy Coney Barrett · Ketanji Brown Jackson
Case opinion
Majority	Kagan, joined by unanimous

Royal Canin U.S.A. v. Wullschleger, 604 U.S. ___ (2025), was a United States Supreme Court case in which the court affirmed the decision of the United States Court of Appeals for the Eighth Circuit, ordering that after a deletion of all federal claims deprived the District Court of federal-question jurisdiction, the suit became one for a state court. Justice Elena Kagan delivered the opinion of the unanimous court.^[1][2][3]

• Federal judiciary of the United States

• Text of Royal Canin U.S.A., Inc. v. Wullschleger is available from: Cornell Justia Oyez (oral argument audio) Supreme Court (slip opinion)
• SCOTUS oral argument audio
• SCOTUS oral argument transcript