Whoever produces is responsible. It has nothing to do with brand authorization. If you authorize your trademark to him, he can use your trademark. If you don’t authorize him to use your brand, he will infringe on yours. If you have trademark rights, you can sue him. It depends on the situation. There may be joint and several liability. You'd better ask a lawyer. I specialize in trademarks. If you have any trademark matters, you can ask me