Human turns into a humanoid robot maid which turns into a maid for a scientist/biologist who moved into a dying planet.

I don't remember this anime as a series/movie, I watched it back in Animax TV Network(Aired 2010-2013 ish). The world is like Blade Runner, you can buy or sell a human that turned into a humanoid robot. The Humanoid robots still have a human mind and have a station to get rest + food. The humanoid maids still have some protection from the police / the company that sells them.

The MC is one of the maids that get bought by the scientist.