Signed by the governor March 30, 2015, is effective May 12, 2015. This bill requires a certificate of assumed and of true name to designate and maintain a registered agent in Utah. Although the state application has previously included this requirement on their form, it is not until this update that the requirement is actually stated in the statute.
http://le.utah.gov/~2015/bills/static/SB0174.html
Utah – SB 174