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
I don't know about a ready-made python module, but you could build your own. For both USPTO and EPO there are APIs, found at http://www.epo.org/searching/free/ops.html and http://tsdr.uspto.gov/ .
I can't tell how easy to use the documents from there are, but you could try making a simple querier that retrieves and parses results. Of course, the more extensive the data you're after, the more work it will be to write a module.