Nican Tlaca University of Cemanahuac (NTUC) is registered with the Copyright Office. The registration includes ideas about how NTUC should operate, including the concept of "Nicantlacayotl".
Nican Tlaca University was founded on December 21,2012. At that time, no one else had ever used the name "Nican Tlaca University" as an organization, web site, or documented work.
Legal note: The term "Nican Tlaca" is a documented historical term dating back to the early 1500's A.D. Having spoken with two lawyers on the matter, NTUC was advised that the term "Nican Tlaca" alone is not a copyrightable term since it has belonged to the historical record for 500 years. In other words, the term "Nican Tlaca" can be used by anyone and is not the private property of anyone.
Academic note: a 1992 book by James Lockhart documents the 16th-century origins of the term "Nican Tlaca".