Questão jurídica principal
Whether the faxed appeal was validly filed despite lacking an original signature
Decisão extraída
A faxed submission without an original signature is invalid; knowingly filing by fax to obtain a later cure constitutes abuse of rights.
Fundamentação extraída
The law requires a signed filing. A missing signature can only be remedied if the omission was inadvertent; a deliberate fax filing does not preserve the deadline.