32 can, consistently with the federal patent liability for or prohibit the copying of laws, impose an article which is protected by neither a federal patent nor a copyright. It was stated in the opinion of the Court (pp 231-232): "In the present case the 'pole lamp' sold by Stiffel has been held not to be entitled to the protection of either a mechanical or a design pa¬ tent . An unpatentable article, like an article on which the patent has expired, is in the public domain and may be made and sold by whoever chooses to do so. What Sears did was to copy Stiffel's design and to sell lamps almost identical to those sold by Stiffel. This it had every right to do under the federal patent laws. That Stiffel originated the pole lamp and made it popular is immaterial. 'Sharing in the goodwill of an article unprotected by patent or trade-mark is......