Roche has filed a lawsuit in the California federal court against Stanford University and medical technology startup Foresight Diagnostics, alleging that Foresight misappropriated its genetic-sequencing trade secrets to develop competing cancer-detection products. In the complaint, Roche claims that Stanford University professors Maximilian Diehn and Ash Alizadeh, whose technology Roche acquired in 2015, secretly established Foresight while serving as consultants for…