In their blog article, Dreyfus law firm describes the Priority Registration Period that the OP3FT organized for Trademark Holders to register Frogans addresses and Frogans networks related to their trademarks. That period took place between April and July, 2015.
The article provides a good recap of what Frogans addresses are and of what is at stake with them for trademark holders.
Frogans technology: Opening of the priority registration periods for the new Dedicated Networks