&gt; ... this patent is not valid under current law.<p>Yet it was approved. And with the current system, it will cost more to fight it than to give in to the extortion of the patent trolls.<p>&gt; In the case of drug patents, it enables drug research to exist at all.<p>You should wonder if this is a good thing, if government should not be involved in this. At the moment, the decision what research to fund is economically driven. Diseases that aren&#x27;t profitable are ignored.