In a recent decision out of the District of Massachusetts, Judge Talwani provided litigants with insights into patent subject matter jurisdiction in declaratory judgment actions. Here the patent owner, US Carburetion, had lost previous motions to throw the case out due to lack of declaratory judgment jurisdiction. But after repeatedly asserting that it does not want to enforce its patents against Gen-Connect, and filing a permanent irrevocable convent stating as such, the Court agreed to dismiss the case...