National Geographic News has more on Egypt's plans to bring a number of antiquities, including the Pyramids, under copyright protection. The article includes the following from Bill Patry:
"'You can do it within your own borders if your own laws permit you to do it,' Patry said of copyrighting property thousands of years old. 'But it's pretty unlikely that it's going to be enforced in other countries. Copyright is a pretty territorial thing.'"
I had a similar reaction here ("the real issue is going to be enforcement: it's hard to imagine other countries (including the US) enforcing the law for acts that occur outside of Egypt").