马斯克试图将“Robotaxi”商标与自他家特斯拉无人驾驶出租车关联，但被美国专利商标局拒绝。（TechCrunch）

Core Point - Elon Musk's attempt to associate the "Robotaxi" trademark with Tesla's autonomous taxi service was rejected by the United States Patent and Trademark Office [1] Group 1 - The rejection indicates potential challenges for Tesla in establishing its brand identity in the autonomous vehicle market [1] - The decision may impact Tesla's future marketing strategies related to its self-driving technology [1]