http://www.hobsonaudley.co.uk/hobsona/general/splash.html - a law firm with great references with a broadly international perspective

http://www.supnik.com/ - another law firm, more articles, a lot of US based law

http://www.jagtiani.com/ - one more firm, just for comparison, more specifically dedicated to US law

http://www.cohums.ohio-state.edu/philo/people/moore.286/IPAnthology.html - actually a book, but could be useful in clarifying many hard to understand issues

http://www.tufts.edu/departments/fletcher/multi/texts/BH423.txt - a little dated, but provides an historical perspective

http://www.goehner.com/copyright.htm   - an educational perspective (fair use issues primarily)

http://www.dfc.org/  - a US initiative for copyright protection and technology

http://www.library.yale.edu/~llicense/index.shtml   - academic orientation, good resource information

http://www.digicontracts.com/  - a little out of place here, but consider the ramifications of software to create contracts for managing digital property copyright