WASHINGTON, D.C. - One month after issuing a dissent in a high-stakes patent dispute between Microsoft Corp. and DataTern Inc., Chief Circuit Judge Randall R. Rader of the Federal Circuit U.S. Court of Appeals on May 5 recused himself from the case (Microsoft Corp. v. DataTern Inc., No. 13-1184; SAP AG and SAP America Inc. v. DataTern Inc., No. 13-1185, Fed. Cir.).