1) Free culture movement
Found on
https://www.crosswordclues.com/clue/patentleft
Patentleft (also patent left, copyleft-style patent license) is the practice of licensing patents (especially biological patents) for royalty-free use, on the condition that adopters license related improvements they develop under the same terms. Copyleft-style licensors seek `continuous growth of a universally accessible technology commons` fro.....
Found on
http://en.wikipedia.org/wiki/Patentleft
No exact match found.
