I don't believe it's a felony or misdemeanor crime, but it could be copyright or trademark infringement if you use a safety approval logo on your product withou

I don't believe it's a felony or misdemeanor crime, but it could be copyright or trademark infringement if you use a safety approval logo on your product without paying and certifying your product with the agency who owns the logo. A company like UL could sue an infringer for using the UL marks on products which UL has not certified, but I think that's about it. UL enforcement info: https://www.ul.com/news/ul-teams-law-enforcement-brand-defense https://www.ul.com/news/ul-teams-law-enforcement-brand-defen... If you claim your device complies with regulations set forth by government agencies such as the FCC or OSHA when it does not, then I think the criminal or other special courts may get involved as it may no longer be just a civil matter. Although FCC violation investigation usually just involve recalling product and paying a "voluntary" fine (it's voluntary, unless you decide not to volunteer, and then it's no longer voluntary). FCC enforcement info: https://www.fcc.gov/general/enforcement-primer https://www.fcc.gov/general/enforcement-primer