Unless renewed under Regulation .05 of this chapter, a certificate expires 5 years from the date it is filed. The Department shall note a certificate's expiration on its records as soon as practical. The Department's failure to note a certificate's expiration does not extend a certificate past its expiration date. After a certificate expires, the: Filing of a completed renewal application does not extend the certificate; and Trade name which is the subject of the certificate is available to a person entitled to file a certificate under Corporations and Associations Article, §1-406, Annotated Code of Maryland.