I thank the organizers of Opto-Contact Québec I 998 and SPIE for giving me the opportunity to speak to you today about some legal issues of technology transfer. Four common forms of technology transfer are licensing agreements, joint ventures, limited partnerships and direct investment Keywords: License agreements, Subject matter to be licensed, Patents, Know-how, The license, Non-exclusive license, Sole license, Exclusive license, Territorial restrictions, Royalties, Joint Venture, New corporation, Simple joint venture, Limited partnerships and Direct investment.