Sumalee holds a LL.B. with the First Honors from Naresuan University and LL.M. from Chulalongkorn University. She has assisted Hutter & Dhira to handle several legal areas such as Foreign Business permission, Board of Investment promotion, intellectual property registration (Trademark, Patent, Copyright), real estate registration, corporate work permit and immigration works. Sumalee is a member of the Lawyer Council of Thailand and the Thai Bar Association.