The granting of a patent typically indicates technological progress and potential for future product improvements. For Tesla, a new inverter technology could mean more efficient power conversion in their EVs, possibly leading to better performance and longer range. This can be seen as a positive development by investors, as it may enhance Tesla's competitive edge in the EV market and lead to increased sales. However, the actual impact on the stock will depend on how Tesla plans to implement this technology and the market's perception of its significance.