In reading the copyright overview I was reminded of the situation with Disney. I remember reading that the dates surrounding how long something remains under copyright are heavily influenced by the copyright of Mickey Mouse. Mickey first appeared in 1928, so how long will it be until iconic Disney material becomes public domain. How will we be able to progress into the future of copyright if so many images have been used and re used, thanks to the advent of the internet. It will be interesting to see how Disney will fight to maintain their copyright. I can't imagine Mickey Mouse being free for the public domain.
I also thought about how during the late 1800s the patent office was nearly shut down because we had thought humans had invented everything there was to invent. Is it possible that images will be used and replicated so often (meme formats and pirating for example) that copyright will become obsolete?