CASPER — A lawsuit filed this month against the Food and Drug Administration in U.S. District Court alleges the owner of Cody Labs misled federal regulators when it moved production of a drug from its Cody manufacturing facility to upstate New York last year.

Competing drug company Genus Life Sciences filed the suit in the District of Maryland Southern Division seeking to overturn approval of a drug the FDA approved earlier this year. It alleges that drug company Lannett lied to federal regulators when it stated in numerous documents it would be developing and manufacturing Numbrino, a n...