I have developed and filed a PPA on an electronic device. A company is interested in licensing, manufacturing, and selling the device. The company estimates they will spend $50,000 to $100,000 to gear up for production, injection molds, etc. From past conversations with the company, I'm fairly sure they will want to share in my patent rights and or intellectual property rights. Is this normal and customary or should I insist on retaining complete intellectual property and patent rights even though they may spend $100,000 making my device ready to manufacture? What is normal and customary in this situation?