Patents and the MIT License
Some of my software projects use MIT so I have studied this issue. My notes are mostly kept as contributions to the Wikipedia page on the MIT License since that is where the decades-old knowledge of the MIT license origins is already maintained. The legal minds in many of the largest companies in the world seem to accept that at least in the US the MIT license implies a patent grant. As probably the most-used open source license, the MIT license has many wealthy corporate defenders if anyone wanted to test that idea.