Philips Oral Healthcare, LLC v. Shenzhen Sincere Mold Technology Co., Ltd. et al, wawdc:2:2018cv01032

toothbrushes and their component parts;

toothbrushes;

feature of an electric toothbrush, namely, a timer for indicating desired brushing times;

feature of an electric toothbrush, namely, a timer for indicating desired brushing times;

feature of an electric toothbrush, namely, an electronic circuit that automatically increases the brushing power from the initial use to optimal power level to permit acclimation of the user to the use of the toothbrush;