Samsung had petitioned for IPR of ST Case1Tech's always-on recording patents, arguing that the claimed "audio forensics analysis system" encompassed speech-to-text functionality disclosed in the prior art. Before the Board, Case1Tech argued that "analysis" means "calculation of noise dosage" using a specific measurement used for hearing protection. After losing at the Board, Case1Tech altered its position on appeal, arguing that audio forensics analysis merely "includes" noise dosage calculation and encompasses any "analysis that uses all captured acoustic data."
Judge Stark did not believe that Acufloor's representations during prosecution sufficed to overcome clear indications from the specification that mortar is not required to reach the very edge of the tile to meet Acufloor's asserted claims.