Canon Sues Optimum Imaging Tech. Over Expired Patents. (See the Lawsuit) Toner News Mobile › Forums › Toner News Main Forums › Canon Sues Optimum Imaging Tech. Over Expired Patents. (See the Lawsuit) Date: Monday January 4, 2021 11:16:05 am This topic is empty. Viewing 1 post (of 1 total) Author Posts #268676 tonerKeymaster Click Photo! Author January 4, 2021 at 11:16 AM Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In 1