The worst I've run into is back when I was still doing a lot of Cisco networking, and Apple came out with IOS, which was the same name as Cisco's IOS operating

The worst I've run into is back when I was still doing a lot of Cisco networking, and Apple came out with IOS, which was the same name as Cisco's IOS operating system. As I remember, Apple ended up having to license the name. Seemed like overnight it became nearly impossible to search for Cisco IOS (since many relevant posts didn't call out Cisco by name, since why would you, IOS is obviously Cisco IOS)