(October 15, 2015, 10:13 AM EDT) -- BOSTON — Subsidiaries to a financial services group argue in an Oct. 7 brief to the First Circuit U.S. Court of Appeals that a trial court erred in not finding that a Puerto Rican credit union’s mark infringes upon its own trademark (Oriental Financial Services Corp., et al. v. Cooperativa de Ahorro y Crédito Oriental, No. 15-1009, 1st Cir.)....