Triumph is owned by Robert Smigel, not NBC, and isn't really that great anyway.
Dave renamed the top ten list to avoid the infringement but soon after stopped referring to it as such from what I remember. I don't think NBC really needs any more bad PR considering what just went down but we'll see what happens if Conan lands another show and people have forgotten about this 6 months later
Actually no. Triumph is owned by NBC. Robert Smigel created Triumph when he was working on Late Night with Conan O'Brien in the early days of the Late Night. Smigel left Late Night. Ever since then Smigel had to ask NBC for permission to film Triumph for skits or take Triumph on other shows.