Koss isn’t faring as well as some companies in the wireless headphone space, but it might compensate for that through a string of lawsuits. As Patently Apple reports, Koss has sued Apple, Bose, JLab, Plantronics and Skullcandy for allegedly violating patents on wireless headphone technology.
https://www.engadget.com/koss-sues-apple-bose-over-wireless-headphones-161923886.html
origin - https://www.pipiscrew.com/2020/07/koss-sues-apple-and-bose-for-allegedly-copying-wireless-headphone-tech/ koss-sues-apple-and-bose-for-allegedly-copying-wireless-headphone-tech