Early in his career, Damien clerked for Chief Judge Edward Toussaint of the Minnesota Court of Appeals, as well as Chief Judge Michael J. Davis of the U.S. District Court for the District of Minnesota. Damien began programming at age 12, has developed websites since 1995, and speaks and writes frequently on technology law issues. His clients range from individuals to Fortune 50 companies. His cases often involve disputes over technology, and his practice is focused on matters related to copyright, software licensing, trade secrets, and trademark infringement. In addition to litigation, Damien also counsels and negotiates matters including intellectual property and other business disputes.