MPEP § fp15.44
Design is inseparable from the article to which it is applied, and cannot exist alone merely as a scheme of ornamentation. It must be a definite preconceived thing, capable of reproduction, and not merely the chance result of a method or of a combination of functional elements (35 U.S.C. 171; 35 U.S.C. 112(a) and (b) or pre-AIA 35 U.S.C. 112, first and second paragraphs). See Blisscraft of Hollywood v. United Plastics Co., 189 F. Supp. 333, 127 USPQ 452 (S.D.N.Y. 1960), 294 F.2d 694, 131 USPQ 55 (2d Cir. 1961).