2 C.F.R. § 200.448
(a) Patent and copyright costs.
(1) The following costs related to securing patents and copyrights are allowable:
(2) The following costs related to securing patents and copyrights are unallowable:
(b) Royalties and other costs for the use of patents and copyrights.
(1) Royalties on a patent or copyright or amortization of the cost of acquiring by purchase a copyright, patent, or rights thereto, necessary for the proper performance of the Federal award are allowable unless:
(2) Special care should be exercised in determining reasonableness when the royalties may have been obtained as a result of less-than-arm's-length bargaining, such as: