^17 U.S.C. 101 (defining "Pictorial, graphic and sculptural works" as "Such works shall include works of artistic craftsmanship insofar as their form but not their mechanical or utilitarian aspects are concerned; the design of a useful article, as defined in this section, shall be considered a pictorial, graphic, or sculptural work only if, and only to the extent that, such design incorporates pictorial, graphic, or sculptural features that can be identified separately from, and are capable of existing independently of, the utilitarian aspects of the article.")
^"Vessel Hull Design Protection Act of 1997（H.R. 2696）", Statement of MaryBeth Peters, The Register of Copyrights, before the Subcommittee on Courts and Intellectual Property, Committee on the Judiciary, Oct. 23, 1997 ("It is a long-held view of the Office that a gap exists in legal protection for the designs of useful articles. Existing bodies of federal intellectual property law do not provide appropriate and practical coverage for such designs, while state law is largely preempted in this area. Consequently, while considerable investment and creativity may go into the creation of innovative designs, they often can be copied with impunity.").