What if I have a file with code I used, made changes to and created & kept in a library & I have stored all the new ones I have brought in projects I

Your employer owns all the code you wrote or used while on the job. Who owns the code and changes you made while working on your own, not at their premises, not on their server, will depend on details in the language of your employment agreement and any non-disclosure agreement you signed. The details of that language might not mean what you think. For example, commas, where they are placed and the absence of commas, have legal significance. You need to have an attorney examine your contracts. The nature and character of the changes and additions you have made, might make a difference. In general, they belong to whoever owns the applications you were working on, but there are lots and lots of exceptions and variations to that rule. Again, you will need an attorney to go over what you have produced. If you appreciate this free advice, please remember to refer me to any friends or acquaintances who need a lawyer. Referrals are still our best source of new business. Do you have a revocable living trust to protect your heirs against probate? Probate takes forever, is expensive, and is annoying. Do your family a favor. Set up a trust, and put all your property, especially any real property, into the trust. Since it is revocable, you can change it, add to it, take property out of it, or even cancel it completely, at any time. We set up such trusts, provide a pour-over will as a back-up for any property that does not make it into the trust, provide you with blank durable powers of attorney for health care and financial decisions, in case you become incapable of making such decisions while still alive, and convey one piece of real property to the trust, usually the family home, for $1500.00. If you would like to hire me to do this, let me know, and I'll send you a list of the information I need.   Dana Sack