(a) Duplicate originals of the articles of amendment shall be delivered to the commissioner. Upon finding that the articles of amendment conform to law, the commissioner shall, when all fees prescribed in this chapter have been paid,
(1) endorse on each duplicate original the word “filed,” and the date of the filing;
(2) file one duplicate original in the commissioner's office;
(3) issue a certificate of amendment and affix the other duplicate original to it.
(b) The certificate of amendment, together with the duplicate original of the articles of amendment affixed by the commissioner, shall be returned to the corporation or its representative.