Good on you, Tesla.
It might seem like a crazy move, but as Elon Musk points out, the true competition is not between different models of electric car, it's between electrics and gasoline cars. If the infrastructure to support electric cars was coming on stream at scale, things would get a lot easier for Tesla.
Yesterday, there was a wall of Tesla patents in the lobby of our Palo Alto headquarters. That is no longer the case. They have been removed, in the spirit of the open source movement, for the advancement of electric vehicle technology. Tesla Motors was created to accelerate the advent of sustainable transport. If we clear a path to the creation of compelling electric vehicles, but then lay intellectual property landmines behind us to inhibit others, we are acting in a manner contrary to that goal. Tesla will not initiate patent lawsuits against anyone who, in good faith, wants to use our technology.