Service of such complaint and process thereunder may be made by delivering within this State a true and attested copy thereof to any person so doing business or any servant or agent of such person, copartnership, association, limited liability company, or corporation, or in any manner otherwise provided by law. A name so registered shall not thereafter be used by a person, copartnership, association, limited liability company, or corporation, unless it is lawfully entitled thereto at the date of such registration. (Amended 1995, No. 179 (Adj. Sess.), § 11.)