{"entity":"uspto","id":"ent_uspto","name":"United States Patent and Trademark Office","predicate":"founded","label":"founding date","page":"https://asof.is/record/uspto/founded","as_of":"2026-10-31","summary":"As of October 31, 2026, United States Patent and Trademark Office's founding date on the AsOf record is July 4, 1836, dated July 4, 1836, from 2 secondary sources (ipmall.info and patentlyo.com). The record holds 1 claim on United States Patent and Trademark Office's founding date, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.","current":["clm_CAF4D528B900"],"claims":[{"id":"clm_CAF4D528B900","value":"1836-07-04","valid_from":"1836-07-04","valid_to":null,"published":"2016-08-24","recorded":"2026-10-29","confidence":0.8,"status":"valid","assertable":true,"superseded_by":null,"sources":[{"url":"https://ipmall.info/content/patent-history-materials-index-brief-history-united-states-patent-office-its-foundation-1790","tier":"secondary","publisher":"ipmall.info","published_at":"2016-08-24T00:00:00+00:00"},{"url":"https://patentlyo.com/media/docs/2008/03/Patent_Act_of_1836.pdf","tier":"secondary","publisher":"patentlyo.com","published_at":null},{"url":"https://www.wikidata.org/wiki/Q1459541","tier":"secondary","publisher":"Wikidata","published_at":null}],"evidence":{"by":"page-read","on":"2026-10-30","quote":"Mr. President, to my mind the passage of the act of 1836, creating the Patent Office marks the most important epoch in the history of our development","url":"https://ipmall.info/content/patent-history-materials-index-brief-history-united-states-patent-office-its-foundation-1790"}}],"replaced":[],"faq":[{"question":"What is United States Patent and Trademark Office's current founding date?","answer":"July 4, 1836, dated July 4, 1836, from 2 secondary sources (ipmall.info and patentlyo.com). The record asserts this claim as of October 31, 2026 (status valid, confidence 0.80)."}],"legend":{"dates":"valid_from: when the claim took effect (a period figure: the day its period closed). published: the earliest day a source on the record published it (a filing's filing date, a post's date; null when no source carries one). recorded: the day AsOf first held it. A figure can take effect weeks before it is published.","why_not":{},"checked_by":{"page-read":"its source page states the value and the date"}}}