The abo ve notwithstanding, the following shall apply in connection with appeals filed by a party entitled to appeal, but which was not a party to the proceedings having led to the decision subject to appeal:  (a) Within fifteen (15) days from notice of the  decision, such party/ies shall have the right to request a copy of the full case file pertaining to the decision from the WSF or other Anti-Doping Organisation that had Results  Management  authority;  (b) If su ch a request is made within the fifteen (15) da y period, then the party making such request shall have twenty -one (21) days from receipt of the file to file an appeal to CAS.