I work with professor from my college and it seems like we are close to invention, so he said me to collaborate with his old friend and patent it. All amount of work was divided between us unequally. Idea belongs to my professor and he did some minor measurement, I've done about 90% of work, including writing text of patent itself, while his friend has no idea about the thing or process and simply gives obvious advices, such as "search for other similar patents and use them as reference" and "you should be comfortable with these topics" (Oh, thank you very much, I never would have guessed without your advice).
Just out of interest, I've searched for all professor's patents and found out one weird thing: each patent has four names (his, his friend's, his student's, who did all the work, and his daughter's). I can't say something bad about her because I don't even know her. The reason is: she has never even been at this college, studying many miles away and having nothing in common with all these researches. I know some of his students, and they definitely have never worked with her.
I feel disappointed and kind of cheated: it's pretty hard for me to know that his friend will share with me this invention, and even harder to know that I will have another "co-author" which I don't even know. His friend, at least, read the text of patent; I doubt that she knows about this research, by the way. I can't refuse now, because all work is done and, besides, I can't change supervisor during this year, at least. I feel like if I would try to protect myself in this situation, he would simply tell that she did some amount of work (and definitely he would be mad at me). What can I do now?