Rights of IP work done for hire is assigned to the payor. This is what I was referring to with the "in a group" call out in my above comment.

That's not simply a patent thing -- the copyright of the code you may write as a software engineer at work is assigned to your employer even though you may be listed as the author.

You can't take the software you wrote as an employee MegaCorp INC and sell it yourself next week, you would be infringing on their copyright (even though you wrote it).