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NOTE: This gem is in alpha. Pairdata is a wrapper for the USPTO's Pair Bulk Data public API


Add this line to your application's Gemfile:

gem 'pairdata'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pairdata


Create a pd object, and go to town.

client =
res = client.pair_sync(searchText: '12432343')
puts res.appStatus
puts res.patentTitle

The only required field is searchText, which defaults to searching qf:applId

Search something else by adding a searchText and qf of your own

the result is a Pairdata::Result object.
full hash is res.response
number of responses is res.numFound


Bug reports and pull requests are welcome on GitHub at


The gem is available as open source under the terms of the MIT License.