The present paper aims to investigate the status of inventions which have been internationally patented with association of Iranian inventors. This research studies the patents of Iranian inventors in quadruplet patent offices during 1990 - 2007. Based upon our findings, 365 Iranian inventors have collaborated in 218 patents and contribution of each of the quadruplet patent offices of Europe, America, Japan, and WIPO has been 48%, 39%, 2%, and 11%, respectively.