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Anyway, here is a real world case that is analogous and can shed some light on the matter. There exists a burger king in the florida that operates under the same name as the large national franchise. The existed prior to burger king being awarded a trademark (I think they might have even been the original), yet they continue to operate just fine. There are two reasons for this. a.) they had IP rights as they were in existence prior to the national franchise filing for the trademark and b.) they pose no threat as far as confusion goes to the larger franchise so it wasn't worth trying to buy out and/or shut down (which they could so easily do).
With that being said, do you seriously think dashcoin could ever present a threat against DKR/Dash? Absolutely not, which is why there has been no mention ever about shutting down the coin.
In reality with case b) there is little that the larger franchise can do unless they make a deal with pre existing burger king. In fact the existence of of the pre existing commercial use of the name puts the national trademark in jeopardy. A very good example is the Lindows / Windows case
https://en.wikipedia.org/wiki/Microsoft_Corp._v._Lindows.com,_Inc. Microsoft’s hold on the Windows trademark in the United States is actually on very shaky ground. What saved Microsoft's position is that Lindows was also doing business in jurisdictions where Microsoft's Windows trademark was on solid ground such as the Netherlands, in effect Microsoft was using its strong trademark rights in the Netherlands to support its weak trademark rights in the United States. So one gets a settlement where the alleged victim, Microsoft, actually pays money. Hmm ...
There a two issues here. First the rights to the Dashcoin name are not the devs to sell. This is the point that MyFarm is making although I am far from convinced that acquiring a certain percentage of the Dashcoins will buy the rights to the Dashcoin name. What the Darkcoin Foundation
may have acquired here is enough of an interest in the Dashcoin name to prevent the trademark registration by a third party, if and that is a big if they can show they have acquired a bona fide interest in the Dashcoin name. It may be the case is that simply owning some Dashcoin may be a better way to prevent the third party registration of Dash. This brings me to my second point there is a good possibility that any holder of Dashcoin may be able to prevent the registration of Dash by Darkcoin foundation in the event the Darkcoin Foundation succeeds in blocking the third party registration of Dash.
In conclusion the Darkcoin Foundation may be able to use the name Dash; however it also may not be able to get the exclusive rights to the name. Preventing someone else from getting trademark rights to a word is a lot easier that obtaining those rights for oneself.