Schindler Elevator Corp. and Inventio AG (collectively “Schindler”) appeal the final decision of the U.S. District Court for the Southern District of New York, which entered summary judgment in favor of Otis Elevator Co. (“Otis”) of noninfringement of U.S. Patent No. 5,689,094 (“the ’094 patent”). Schindler Elevator Corp. v. Otis Elevator Co., 586 F. Supp. 2d 231 (S.D.N.Y. 2008) (“Summary Judgment Order”); Schindler Elevator Corp. v. Otis Elevator Co., 561 F. Supp. 2d 352 (S.D.N.Y. 2008) (“Claim Construction Order”). Because we conclude that the district court erred in construing the terms “information transmitter” and “recognition device” to exclude any “personal action” by an elevator user other than “walking into the monitored area,” we vacate the grant of summary judgment and remand for further proceedings.