It looks like MIT didn't maintain their 1789164 U.S. trademark registration number for Athena: "computer programs, and instruction manuals sold therewith, which collectively provide a set of integrated network services; namely, user authentication, file service, name service, messaging service, mail service, network management service, and print service ... Cancellation Date ... February 12, 2016"

https://en.wikipedia.org/wiki/Project_Athena

(they do have registration number 1722642 for "Athena ... educational services; namely, courses of instruction at the college and graduate level and research services" but this doesn't look closely related)