Advisor trying to patent an idea for himself even though we wrote the paper together! My advisor is trying to patent an idea without me. I got to know that he is registering the patent through the IP officer at our University. When I asked him about it, he did not give me a straight answer and has not responded to any of my emails inquiring about this. The idea he is trying to patent is literally the entire paper that a colleague and I wrote as co-first authors. I have defended my PhD and I am about to begin my job in industry.

Any advice on how to go about this situation ? 

If I go against him,I have 2 fears at the moment i.e.


He might make my colleague's PhD miserable because the two of us would be on the patent, which he does not like (he tried to remove one of the inventors on a previous patent but I convinced him otherwise). I was lucky enough to graduate on time.
He would not provide me any more recommendation letters for green card, etc. 


And advice is appreciated.
The proper place to handle this, now, is the IP office at the university. Raise the issue in your own name so that your colleague doesn't suffer any consequences, but if negotiations follow, make sure everyone appropriate is included. 

But you may also want to consult an IP lawyer. The university may be able to help you with this also. 

It is hard to avoid all negative consequences in a situation like this, of course. Especially if the professor is a bad actor with power.