Registration in the Supplemental Register, serves as notice that the registrant is using or has appropriated the trademark. By the very fact that the trademark cannot as yet be on guard and there are certain defects, some obstacles which the use must still overcome before he can claim legal ownership of the mark or ask the courts to vindicate his claims of an exclusive right to the use of the same. It would be deceptive for a party with nothing more than a registration in the Supplemental Register to posture before courts of justice as if the registration is in the Principal Register.
