by the United States government

“ REPRODUCTION FOR TEACHING OR ANALYSIS.—It is not an infringement of the exclusive rights of a design owner for a person to reproduce the design in a useful article or in any other form solely for the purpose of teaching, analyzing, or evaluating the appearance, concepts, or techniques embodied in the design, or the function of the useful article embodying the design. ”

“ Accepting an order or reorder from the source of the infringing article shall be deemed ordering or reordering within the meaning of subsection (b) (2) .
(e) INFRINGING ARTICLE DEFINED.—As used in this section, an "infringing article" is any article the design of which has been copied from a design protected under this chapter, without the consent of the owner of the protected design. An infringing article is not an illustration or picture of a protected design in an advertisement, book, periodical, newspaper, photograph, broadcast, motion picture, or similar medium. ”