http://www.newscientist.com/article/dn21597-us-judge-rules-that-you-cant-copyright-pi.html http://www.newscientist.com/article/dn21597-us-judge-rules-t... Alon

http://www.newscientist.com/article/dn21597-us-judge-rules-that-you-cant-copyright-pi.html http://www.newscientist.com/article/dn21597-us-judge-rules-t... Along with https://en.wikipedia.org/wiki/Berne_Convention https://en.wikipedia.org/wiki/Berne_Convention Play a factor in trademarks and copyright. Then the variations in each country of what you can and can't trademark/copyright.