Five years ago, I invested in an company whose viability was based on a technology. The inventor/incorporator, who was a board member and officer for five years until a few months ago, withdrew his technology and resigned as a board member. The company does not have any other viable means to make money without this technology. I also found out that there is no contract or license agreement between the inventor and the company when I invested 5 yrs ago. What are my rights as a shareholder? Is this considered fraud?