The board may designate a professional engineer as ineligible to practice or offer to practice engineering in this state using one of the following terms:
(1) Professional engineer-retired. – A registrant may apply for retired status upon certification that he or she is no longer practicing or offering to practice engineering in this state for remuneration.
(2) Professional engineer-inactive. – A registrant may request inactive status upon affirmation that he or she is no longer practicing or offering to practice engineering in this state.
(3) Professional engineer-lapsed. – A registrant's license is lapsed when the registrant does not respond to renewal notices or pay the required fees.
(4) Professional engineer-invalidated. – A registrant's license is invalidated when he or she is unable to provide sufficient proof that any condition of renewal set forth in this article or by board rule has been met.