Indiana Code Title 24. Trade Regulation § 24-2-1-11

Sec. 11. (a) The secretary may adopt rules under IC 4-22-2 to establish:

To the extent practical, the classification of goods or services should conform to the classification of goods or services adopted by the United States Patent and Trademark Office.

(b) If a single electronic application includes goods or services that fall within multiple classes, the secretary may require payment of a fee for each class.