(b) Effect of proper filing Unless extension of protection is refused under section
1141h of this title, the proper filing of the request for extension of protection under subsection (a) of this section shall constitute constructive use of the mark, conferring the same rights as those specified in section
1057 (c) of this title, as of the earliest of the following:
(1) The international registration date, if the request for extension of protection was filed in the international application.
(2) The date of recordal of the request for extension of protection, if the request for extension of protection was made after the international registration date.
(3) The date of priority claimed pursuant to section
1141g of this title.