Based on your comments, either you or your corporation has a cause of action for breach of contract for failure to pay for the services rendered.
It would be helpful if you have some sort of written agreement that spells out the terms of the contract; but if not, documents of your efforts in selling the product will work as an alternative.
Writing a demand letter is a good starting point, but you will most likely have to file suit and obtain a judgment so that you can reach DermaTech's assets.
If you would like to discuss further, please contact my office.
Mitch Abdallah (916) 446-1974
Answered on Jun 17th, 2014 at 9:25 PM