ops EPO Open Patent Services OPS Documentation http://www.epo.org/searching/free/ops.html http://documents.epo.org/projects/babylon/eponot.nsf/0/2F88B7285FC1E3ECC125785500531278/$File/OPS_v2_6_2_documentation_v1_0_4_en.pdf Requests: HTTP for Humans http://docs.python-requests.org/en/latest/