In recent months, a veritable open patent war has erupted between Tesla Motors and Toyota. Both companies have been widely cited in the industry and financial press for their respective announcements opening up their electric vehicle (Tesla) and fuel cell (Toyota) patents. Tesla CEO Elon Musk opened the first salvo with a blog post last June in which he announced that Tesla would “not initiate patent lawsuits against anyone who, in good faith, wants to use our technology.”