You're referring to Logi Escalier, also known as Logitech's stair-step or escalier patent controversy.
Shortly after the patent was granted, criticism arose within the keyboard community and among ergonomic experts. Some argued that the design was overly restrictive, patenting a layout that was already in use or obvious to create. Others claimed that Logitech was attempting to monopolize a keyboard design that didn't offer substantial innovation. logi escalier patched
If there's anything else I can help clarify or another topic you'd like to explore? You're referring to Logi Escalier, also known as