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incrediBILL - 1:06 am on Mar 19, 2005 (gmt 0)
Considering your wife only learned about this industry segment on the job and then you built something to possibly compete with her employer doesn't sound promising whatsoever. Did she sign a non-compete or non-disclosure agreement for this job? Does the database you built compete directly with her company or is it something different? If the data is something completely different and wouldn't impact her company's revenue you're probably in better shape. If you start selling it while your wife is still employed at that company it could be an even bigger fiasco. I would definitely seek legal advice as I think you're on thin ice already.
Your first mistake was not finding out if this is legal before wasting 3 years of your life building it.
If the answer is yes you're most likely out of business.