McNeil Pharmaceuticals, a subsidiary of Johnson & Johnson, might have manufactured allegedly defective batches of children’s Tylenol in Pennsylvania, but it’s a New Jersey company, a federal judge in Philadelphia has ruled, preserving the diversity jurisdiction to keep the case in federal court.

U.S. District Judge Gene E.K. Pratter of the Eastern District of Pennsylvania is the fourth judge in the district to hold that way after the plaintiff—in this case, the father of a 4-year-old who died after ingesting children’s Tylenol—moved to remand the case to the Philadelphia Court of Common Pleas.