# United States Patent and Trademark Office founding date

entity: /record/uspto.md  
predicate: founded  
page: /record/uspto/founded  
as_of: 2026-10-31  

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 The record holds 1 claim on United States Patent and Trademark Office's founding date, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.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 founding date

What the record asserts on 2026-10-31.

- [United States Patent and Trademark Office](/record/uspto.md) | founded | 1836-07-04 | valid 1836-07-04 to present | conf 0.80 | valid | [clm_CAF4D528B900](/claim/clm_CAF4D528B900.md)
  sources: https://ipmall.info/content/patent-history-materials-index-brief-history-united-states-patent-office-its-foundation-1790, https://patentlyo.com/media/docs/2008/03/Patent_Act_of_1836.pdf, https://www.wikidata.org/wiki/Q1459541

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [United States Patent and Trademark Office](/record/uspto.md) | founded | 1836-07-04 | valid 1836-07-04 to present | conf 0.80 | valid | [clm_CAF4D528B900](/claim/clm_CAF4D528B900.md)
  sources: https://ipmall.info/content/patent-history-materials-index-brief-history-united-states-patent-office-its-foundation-1790, https://patentlyo.com/media/docs/2008/03/Patent_Act_of_1836.pdf, https://www.wikidata.org/wiki/Q1459541

## Questions this record answers

### What is United States Patent and Trademark Office's current founding date?

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).


## Get this data

- JSON: /v1/entities/uspto/founded (this fact) · /v1/entities/uspto?predicates=founded (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: entity_state(entity: "uspto", predicates: ["founded"], scope: "all")
- Entity twin: /record/uspto.md · timeline: /timelines/uspto.md

---

AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.