I saw repository on GitHub where someone had LICENSE file as below:
Copyright year name
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
I have read that Apache2.0 license must be copied into
LICENSE file, and then the
NOTICE file will contain exactly that what I showed above.
If the license was invalid at first time, then can someone say "your code at some moment wasn't licensed, so I created repo with your code and added copyright on my name"? And if license was fixed, then does still someone could do it, because "law is not retroactive"? If yes, what this poor man should do to have copyrights?