"The owner of a federal trademark registration may sue in federal court more easily. It is worth noting that even without a federal trademark registration you still may be able to sue in federal court, but it may be more costly when proving jurisdiction (i.e. diversity of citizenship & amount in controversy over $75,000). Even if you can't sue in federal court, you can always sue in state court. However, attorneys usually prefer federal court in trademark cases for perceived procedural advantages."
"The owner of a federal trademark registration may sue in federal court more easily. It is worth noting that even without a federal trademark registration you still may be able to sue in federal court, but it may be more costly when proving jurisdiction (i.e. diversity of citizenship & amount in controversy over $75,000). Even if you can't sue in federal court, you can always sue in state court. However, attorneys usually prefer federal court in trademark cases for perceived procedural advantages."