Current Filing Basis
In applications under SS1 and 44 of the Trademark Act, the applicant may claim more than one basis, and may add or substitute a basis after filing the application. The "current filing basis" means the basis, as amended (changed after the initial or original filing). If the basis has not been amended, the current filing basis is the same as the original filing basis.
See Filing Basis.
Source: U.S. Patent and Trademark Office.