Original: Ultraman's licensing rights outside of Japan have been the subject of a prolonged legal dispute between Tsuburaya Productions and Chaiyo Productions (also called Tsuburaya Chaiyo Co Ltd) based in Thailand.
Simplified: Ultraman's licensing rights outside of Japan have been the subject of a long legal dispute between Tsuburaya Productions and Chaiyo Productions (also called Tsuburaya Chaiyo Co Ltd) based in Thailand.