Illegal. According to relevant laws and regulations, a trademark registrant shall not change the registered trademark name, address or other registration matters without authorization during the use of the registered trademark. Otherwise, the local industrial and commercial administration department shall order him to make corrections within a time limit; if he fails to make corrections within the time limit, he shall be punished by The Trademark Office revoked its registered trademark. Trademarks are signs, marks, etc. engraved or printed on goods or packaging to distinguish them from other similar goods.