South Dakota Codified Laws
Chapter 15 - Manufacturer's Lien
Section 44-15-7 - Federal violation.

44-15-7. Federal violation.
No sale may be made pursuant to §§44-15-1 to 44-15-7, inclusive, if the sale would be in violation of any right of a customer under federal patent or copyright law.

Source: SL 1998, ch 267, §7.