My former employer terminated me several years ago right after I help develop a product that they are now selling in major retail stores across the US. They recently got in touch with me and said they needed my signature on the final patent for the previously mentioned product. Needless to say, after my departure, this employer became number one on my list of companies I hate and despise. My questions though are...1) I'm I required to sign this patent even though I was terminated or can I at least make them pay me for my cooperation. 2) If I don't have any leverage to make them pay me, what happens if I just don't sign off on the patent.