Mealey's (October 30, 2020, 7:24 AM EDT) -- SAN FRANCISCO — The writers of a Christian rap song who initially prevailed in a copyright infringement suit against pop singer Katy Perry, tell the Ninth Circuit U.S. Court of Appeals in an Oct. 13 appellant brief that a trial court judge wrongly relied on inadmissible evidence and an improper substantial similarity standard in vacating a $2.9 million judgment in their favor (Marcus Gray, et al. v. Kathryn Elizabeth Hudson, et al., No. 20-55401, 9th Cir.)....