I'm not sure about that. I know their site used to mention the patents. Their website says this now: "Unicomp was started in 1996 when we purchased keyboard te

I'm not sure about that. I know their site used to mention the patents. Their website says this now: "Unicomp was started in 1996 when we purchased keyboard technology from Lexmark International and IBM. You may recall that Lexmark manufactured the high quality Model M keyboards for IBM computers and terminals prior to 1996. Many of the same people, who in 1995 helped produce millions of keyboards for Lexmark customers, continue to manufacture keyboards for us today. Our goal is to build on our heritage and continue to provide our customers with the highest quality keyboard products." In any event, I've been very happy with their products. It's like 1988 all over again for me.