Federal Circuit Remands, Reverses In Dispute Over Proppant Container Patent

Mealey's (July 23, 2021, 1:14 PM EDT) -- WASHINGTON, D.C. — In declaring various claims of a patent directed to a container for proppant used during hydraulic fracturing obvious, the Patent Trial and Appeal Board relied on a new theory not previously raised by a petitioner for inter partes review (IPR), requiring reversal, the Federal Circuit U.S. Court of Appeals ruled July 23....