DENVER - The U.S. Postal Service (USPS) and its authorized supplier of blank label rolls were not subject to antitrust liability based on USPS's requiring contract postal units (CPUs), which provide postal services to the public pursuant to contracts with USPS, to purchase the label rolls from the supplier because such conduct fell outside the Postal Accountability and Enhancement Act's (PAEA) waiver of immunity, a federal judge in Colorado ruled July 3 (TOG, Inc., et al. v. United States Postal Service, et al., No. 1:12-cv-01946, D. Colo.; 2013 U.S. Dist. LEXIS 93598).