The point is that copyright dedications are not licenses. Therefore, if you want to submarine someone... do a copyright dedication (but don't grant patent righ

The point is that copyright dedications are not licenses. Therefore, if you want to submarine someone... do a copyright dedication (but don't grant patent rights). Wait till your "public domain" work is broadly adopted, then sue. Or, conversely, if you want to get sued... use works in the public domain where the person doing the dedication hasn't also granted patent license. At least if you use a standard MIT license there may be an "equitable estoppel through acquiescence" in which the copyright holder might not be able to sue you for patent infringement since the MIT license said you could use the work.