Retrieve US patents claims

Question

I am trying to automatically retrieve patents claims from different jurisdictions. Open Patent Services allows to retrieve patents Claims from WO, EU, and several other patent offices whereas no coverage for US jurisdiction is provided. USPTO PatentsView supports fetching abstracts from US patents but no Claims. To adhere to Terms of Use of patent search engines, I don't want to use a web crawler. What patent search engines do allow to automatically retrieve Claims of patents and patent applications from USPTO patent databases (via API)?

Answer 1

You should take a look at patent_client! It's a python module that searches the live USPTO and EPO databases using a Django-style API. The results from any query can then be cast into pandas DataFrames or Series with a simple .to_pandas() call.

You can get what you're looking for like this:

from patent_client import Inpadoc, Patent, PublishedApplication

# US Documents
Patent.objects.get("<patent_number>").claims_text
PublishedApplication.objects.get("<pub_number>").claims_text

# International / INPADOC documents
Inpadoc.objects.get("<Publication Number>").claims.claims_text

There is also a built-in parser for claims that will produce structured data, dividing the claim into limitations and providing dependency information:

from patent_client import Inpadoc, Patent, PublishedApplication

# US Documents
Patent.objects.get("<patent_number>").claims_text
PublishedApplication.objects.get("<pub_number>").claims

# International / INPADOC documents
Inpadoc.objects.get("<Publication Number>").claims.claims

A great place to start is the User Guide Introduction

PyPI | GitHub | Docs

(Full disclosure - I'm the author and maintainer of patent_client)