US producer of athletic footwear with spring technology, Spira Footwear has filed a lawsuit against the International Amateur Athletic Federation (IAAF) and the United States Association of Track and Field (USATF), the governing bodies for track and field both internationally and in the USA. The suit alleges that the application of IAAF and USATF Rule 143 which bans spring technology for competition constitutes a violation of the Sherman Anti-Trust Act and a restraint of trade.
