At oral argument, counsel for Cuozzo argued that the PTAB should apply the Phillips claim construction analysis to IPR proceedings for
several reasons: 1) BRI only applies when a claim
under review may be freely amended; 2) Congress intended the IPR process to be «adjudicatory» rather than «examinational;» and 3) the two
different standards would result in anomalies, including
situations where claims mean «one thing for patentability in the Board, but a wholly
different thing for infringement in the district courts.»