N.M. Code R. § 3.5.1.10
F. Patent and copyright royalties are business income where the patent or copyright with respect to which the royalties were received arises out of or was created in the regular course of the taxpayer's trade or business operations or where the purpose for acquiring and holding the patent or copyright is related or incidental to such trade or business operations.
[1/15/74, 9/15/88, 9/20/93, 1/15/97; 3.5.1.10 NMAC - Rn & A, 3 NMAC 5.1.10, 6/29/01]