There is no exclusive rights forever rule for anything anywhere, but there are issues with trademark law, which does recognize that the first and continuous user of a distinctive mark (whether registered or not) has enforceable rights. Now btc-e is basically a rogue exchange that operates on the gray web and does whatever the hell it wants, so I expect nothing different.
But if another exchange -- say one that is going out of its way to try to be legally-compliant -- wants to pick up Dash, they will probably want to avoid behaving in a similarly rogue manner.
lol, we own the trademarks. weak FUD smooth.
plus we own the original dashcoin git.
LOL no. You wasted your money buying a github repo.
A decentralized community is not something you can buy. There were and are many people beside that slb idiot (or maybe not such an idiot, since he did get money for nothing out of you guys) who were and are active and non-infringing users of the trademark as members of a decentralized collaborative effort. They all have trademark rights, and all but one of them did not agree to any sort of transfer.
But we covered this way back when, so no need to repeat the whole discussion.