I'm the inventor of record on four issued patents and one that is currently under review. To date, all of these patent assignment documents have only been partially executed between myself and my current, and soon to be, former employer. I signed off on the assignments but never received fully executed acknowledgement copies and a required $1 consideration for each of the assignments. Do any legal options exist related to retaining/reclaiming the rights to this intellectual property? I should note that the four issued patents are more than three plus years old. If so, I would obviously need qualified counsel moving forward.