雀巢的 Nespresso 咖啡機創新之處在哪裏？

雀巢的. Nespresso 咖啡機創新之處在哪裏?是什麼原因被歐洲專利局撤銷了專利?

European Regulator Revokes Patent Covering Lucrative Nespresso System

Nestlé Has Patent for Nespresso System Revoked

苦於沒有註冊 WSJ ....看不到詳情，有人可以説説嘛?謝謝了!