Mealey's (May 4, 2020, 12:49 PM EDT) -- WASHINGTON, D.C. — In an April 30 order, the Federal Circuit U.S. Court of Appeals indicated that it may revisit its own recent ruling that the Patent Trial and Appeal Board erred in allowing Facebook Inc. to join two subsequent inter partes reviews (IPRs) to two existing IPRs and, in so doing, introducing new patent claims to the proceedings (Facebook Inc. v. Windy City Innovations LLC, Nos. 2018-1400, -1401, -1402, -1403, -1537, -1540, -1541, Fed. Cir.)....