id,agency_id,docket_id,title,document_type,subtype,posted_date,posted_year,posted_month,comment_start_date,comment_end_date,last_modified,fr_doc_num,open_for_comment,withdrawn,object_id FDA-2013-E-1656-0002,FDA,FDA-2013-E-1656,U.S. Patent and Trademark Office - Letter,Other,Letter(s),2013-12-18T05:00:00Z,2013,12,2013-12-18T05:00:00Z,,2013-12-18T20:59:39Z,,0,0,09000064814ca381 FDA-2013-E-1656-0001,FDA,FDA-2013-E-1656,Pfizer Inc. - Patent Term Application,Other,Application,2013-12-18T05:00:00Z,2013,12,2013-12-18T05:00:00Z,,2013-12-18T21:06:55Z,,0,0,09000064814ca380