It doesn't matter whether they care about this particular instance, it may still need to be defended. Quote from
http://en.wikipedia.org/wiki/Trademark: "In the case of a trademark registration, failure to actively use the mark in the lawful course of trade, or to enforce the registration in the event of infringement, may also expose the registration itself to become liable for an application for the removal from the register after a certain period of time on the grounds of "non-use". It is not necessary for a trademark owner to take enforcement action against all infringement if it can be shown that the owner perceived the infringement to be minor and inconsequential. This is designed to prevent owners from continually being tied up in litigation for fear of cancellation."
So the crucial question seems to be whether this is a "minor and inconsequential" breach. Given that the device will be released in 41 countries and seems to be getting a lot of press attention my opinion is that is a major breach.
My reading of the Settlement Agreement suggests that Hyperion are supposed to notify Amino who then have 25-day window of opportunity to take action against the infringer; if Amino decline to take action then Hyperion may do so.