 This series of litigations led to the United States Supreme Court case "Kellogg Co. v. National Biscuit Co." in 1938.The Supreme Court ruled that "shredded wheat" was generic and not trademarkable; and that in any case, when the first patent for shredded wheat machinery expired in 1912, the right to apply the name "shredded wheat" to the product passed into the public domain along with that patent.Shredded wheat consists entirely of whole wheat.