Python module for searching patent databases, ie USPTO or EPO

For my work i have to find potential customers in biomedical research and industry.

I wrote some pretty handy programs using the module biopython, which has a nice interface for searching NCBI. I have also used the clinical_trials module, to search clinicaltrials.gov.

I now want to search patent databases, like EPO or USPTO, but i haven't been able to find even the slightest trace of python module. But maybe i'm missing something obvious?

Since google has a patent search option, i was wondering if there might be a python module for searching google which could be adapted to only searching patents?