Katun Responds to Canon’s U.S. Patent Lawsuit. Confident that their Canon “’Toner Patent” is Non-Infringing. Toner News Mobile › Forums › Toner News Main Forums › Katun Responds to Canon’s U.S. Patent Lawsuit. Confident that their Canon “’Toner Patent” is Non-Infringing. Date: Saturday August 27, 2022 10:31:25 am This topic is empty. Viewing 1 post (of 1 total) Author Posts #372403 jimKeymaster Click Photo! Author August 27, 2022 at 10:31 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 2