Evaluating　the　quality　of　patents　and　identifying　high-quality　patents　from　numerous　patents　can　promote　economic　activities　such　as　patent　transfer,　acquisition　and　custody,　and　pledge　financing;　assisting　enterprises　to　understand　the　status　quo　of　technology　development,　determine　R&D　direction,　defend　themselves　against　patent　trolls　and　product　infringement.　In　order　to　evaluate　patent　quality　simply　and　effectively,　a　patent　quality　evaluation　model　based　on　entropy　weight　method　and　improved　TOPSIS　is　proposed.　First,　the　evaluation　indicator　system　for　patent　quality　were　established,　which　included　5　categories　and　a　total　of　11　indicators.　Then,　the　weights　of　each　indicator　were　calculated　by　entropy　method.　Finally,　we　employ　the　improved　TOPSIS　and　traditional　TOPSIS　to　calculate　the　ranking　of　performance　for　each　patent,　and　then　compare　the　results　of　these　two　methods　to　verify　the　superiority　of　the　improved　method.　The　suggested　methodology　was　applied　to　the　Geriatric　technology.　The　identifying　of　high　quality　patents　is　of　a　great　significance　to　decision　makers　and　can　also　serve　as　a　useful　reference　for　future　studies,　which　may　be　of　a　great　interest　to　the　general　audience.