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This is not a patent. It is an application for a patent, not yet issued, filed nearly 7 years ago back in 2012.

An issued patent ID is only numbers, currently 7 digits long. Anything starting with “US” is an application number.

It is a US patent. Issued May 9, 2017

US patent application serial numbers include the year ala:

US 2014/0067850 A1 (application number for this patent)

My mistake, sorry!

What won't the patent office accept! It would be funny except for "first to file".

I’m confused. Did they just patent querying a graph?

Kinda. The first sentence of the first claim greatly reduces the scope, though:

> one or more graphs associated with a social-networking system

The rest is gobbledigook that would take too long to grok (for me anyway). It is some sort of interactive user query, I think.

In any case, at least it isn't so broad that it means just any graph.

Patent US9646028B2 – Graph Query Logic – Facebook Inc