A state trial judge has disqualified Dallas-based Bickel & Brewer from representing a plaintiff in a high-stakes suit over mining technology.

Judge Carlos Cortez of the 44th District Court in Dallas found on Nov. 28 that Bickel & Brewer, while representing plaintiff RSR Corp., obtained confidential information about the defendant, Chilean-based Inppamet Ltd., through the law firm’s relationship with its co-counsel in Chile.