secondary trademark register of the USPTO. It allows for registration of marks that are not eligible for registration on the Principal Register (most commonly because they are merely descriptive), but are capable of distinguishing an applicant’s goods or services. Generic marks cannot be registered on the Supplemental Register.
Marks registered on the Supplemental Register receive protection from conflicting marks and other protections, but do not receive all of the benefits of registration. Applications filed with an intent-to-use basis are not eligible for registration on the Supplemental Register. Marks on the Supplemental Register that subsequently gain secondary meaning may be amended to the Principle Register.