The term 'usage rights' is a bit confusing here. I think it may be intended to refer to 'use' as defined in the previous half of the sentence, i.e. 'including the rights to run, read, copy, change, distribute and sell'.
Maybe this should be made clearer somehow, e.g. 'and including any herefore necessary license to patents the authors may hold'.
What the patent system gives a patentholder is the ability to selectively prohibit others from making, selling, or using some product or method protected by the patent. The Lil License is weird in that it only explicitly mentions the latter.
Its text regarding copies of the license is also very weird.
Please do not use this license.