When Tesla Motors Inc (NASDAQ:TSLA) CEO Elon Musk announced that the electric car company would let competitors use its technology to build their own electric cars, many saw this as a shrewd business decision meant to energize Tesla’s particular niche at the expense of gas-powered cars. But analysis of Tesla’s patent portfolio by Thomson Reuters reporter Bob Stembridge (h/t Brian Fung at The Washington Post) shows that the company is already pulling back on patent applications, which lends more credence to Musk’s original explanation: “Technology leadership is not defined by patents.” Nokia’s impressive patent portfolio proves Musk’s point First of…