He lost in state court because he signed an affidavit that said he hadn't referred to himself as a professional engineer when he didn't have a license, and the court found that he had done that and his federal lawsuit was dismissed about as soon as it was filed as not being significant enough to intervene in ongoing civil enforcement actions.
https://mn.gov/law-library-stat/archive/ctapun/2023/OPa221099-041023.pdf
https://law.justia.com/cases/federal/district-courts/minnesota/mndce/0:2021cv01241/194678/20/