Any person desiring to pack, mark, sell, or offer for sale any agricultural product under any grade, trademark, brand, or other markings relating to grade, quality or size, not established and adopted by the Commissioner, may file with the Commissioner a certificate describing the special grade, trademark, brand, or other markings. If the Commissioner: (i) approves of the completeness of definitions of such special grade, trademark, brand, or other markings described in the certificate; (ii) finds that such grade terminology, trademark, brand, other markings, or definitions are in no way deceptive; and (iii) determines that definitions used to describe grade, classifications, quality, condition, size, variety, or other characteristics of agricultural products clearly document where they differ from the official grades, the special grade, trademark, brand, or other markings may thereafter be used by the person filing the certificate. For the purpose of this section a brand, trademark, or other markings may represent a grade.