IP Law
Get flash to fully experience Pearltrees
Copyleft is a general method for making a program (or other work) free, and requiring all modified and extended versions of the program to be free as well.
What is Copyleft? - GNU Project - Free Software Foundation (FSF)
Intellectual Ventures Home
We believe ideas are valuable. At Intellectual Ventures, we invest both expertise and capital in the development of inventions. We collaborate with leading inventors and partner with pioneering companies.
