Re: Copyright, Patents all screwed.
Within recent memory the law was that copyright lasted 70 years from the point of creation, which was both fair and easy to track. Created in 1900, copyright expires 1970.
As soon as you get into life of author + something then you actually have to figure out who the Author was, and when they died which requires a lot more time and effort that just looking at ©2018 and knowing that the copyright expires in +70 years.