WASHINGTON, D.C. - The U.S. solicitor general was invited by the U.S. Supreme Court on June 2 to weigh in on a dispute over the continued viability of Brulotte v. Thys Co. (379 U.S. 29 ), which held that a patentee's use of a royalty agreement that projects beyond the expiration of the date of the patent is unlawful per se (Stephen Kimble, et al. v. Marvel Enterprises, Inc., No. 13-720, U.S. Sup.).