Right, also it's for "any patent licenses granted to You under this License" - if Apple owns the patent, they have no need for Swift's license to grant them a p

Right, also it's for "any patent licenses granted to You under this License" - if Apple owns the patent, they have no need for Swift's license to grant them a patent license. They own it. (They are not being licensed the patents by the government, and they're certainly not being licensed them under the terms of Swift's license.)