Proppant Express Investments Prevails in U.S. Court of Appeals for Federal Circuit: PropX Did Not Infringe on SandBox Logistics Intellectual Property, Upholding Federal District Court Ruling DENVER, May 20, 2020 (GLOBE NEWSWIRE) -- Proppant Express Investments, LLC (“PropX” or the “Company”), a leader in providing last-mile sand logistics to the energy industry,  today announced that...

Proppant Express Investments Prevails Again by Invalidating 24 SandBox Logistics Patent Claims DENVER, Feb. 18, 2019 (GLOBE NEWSWIRE) -- Proppant Express Investments, LLC (“PropX”) today announced that on February 14, 2019 the U.S. Patent and Trademark Office (“Patent Office”) invalidated 24...

Proppant Express Investments Wins Dismissal of all SandBox Patent Litigation   DENVER, Jan. 22, 2019 (GLOBE NEWSWIRE) -- Proppant Express Investments, LLC (“PropX”) announced today that the U.S. District Court for the Southern District of Texas has dismissed all patent...