Merck is looking to move the only current lawsuit in Pennsylvania state court over its shingles vaccine to federal court, claiming a defendant was fraudulently brought into the case solely to give the state court jurisdiction.

The drugmaker notified the Philadelphia Court of Common Pleas on Wednesday that it has removed the case, captioned Bentley v. Merck, to the U.S. District Court for the Eastern District of Pennsylvania. Merck had filed its notice to the district court Monday.