Who owns the ESP-IDF trademark?

The ESP-IDF trademark is owned by Espressif Systems (Shanghai) Co., Ltd..

What is the serial number for ESP-IDF?

The USPTO serial number for ESP-IDF is 79366193.

What is the registration number for ESP-IDF?

ESP-IDF is registered under USPTO registration number 7369791.

ESP-IDF - Owned by Espressif Systems (Shanghai) Co., Ltd. - (Class 009, Class 042)

Q: What class is the ESP-IDF trademark registered in?

The ESP-IDF trademark is registered in Class 009 (Electronics, software & scientific instruments), Class 042 (Scientific, technology & SaaS services).

What to file next

Section 8 declaration of continued use

When: Due between the fifth and sixth anniversary of registration.
Extensions and grace: A six-month grace period follows, with an added per-class fee.
If it is missed: A missed Section 8 cancels the registration, and there is no revival route for it.

How the Section 8 deadline works

General information about USPTO practice, not legal advice. The register is the authority, and a filing that has not yet posted can change what is owed.

Full Goods & Services

Class 009Electronics, software & scientific instruments

US codes: 021, 023, 026, 036, 038

Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable multimedia files, computer software, blank digital or analogue recording and storage media; mechanisms for coin-operated apparatus; cash registers, calculating devices; computers and computer peripheral devices; diving suits, divers' masks, ear plugs for divers, nose clips for divers, gloves for divers, breathing apparatus for underwater swimming; fire-extinguishing apparatus.

Class 042Scientific, technology & SaaS services

US codes: 100, 101

Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software.

This description is as filed with the USPTO and defines the scope of trademark protection.

Filing Basis & Declarations

Standard Characters ClaimedTrademark

Status History

37 events

NEW REPRESENTATIVE AT IB RECEIVED

Dec 05, 2025

Code NREP

FINAL DECISION TRANSACTION PROCESSED BY IB

Nov 17, 2024

Code FINO

FINAL DISPOSITION PROCESSED

Oct 29, 2024

Code FIMP

FINAL DISPOSITION NOTICE SENT TO IB

Oct 29, 2024

Code FICS

FINAL DISPOSITION NOTICE CREATED, TO BE SENT TO IB

Jul 30, 2024

Code FICR

REGISTERED-PRINCIPAL REGISTER

Apr 30, 2024

Code R.PR

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Apr 30, 2024

Code NRCC

NOTIFICATION PROCESSED BY IB

Feb 14, 2024

Code GPNX

PUBLISHED FOR OPPOSITION

Feb 13, 2024

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Feb 13, 2024

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jan 24, 2024

Code NONP

NOTICE OF START OF OPPOSITION PERIOD CREATED, TO BE SENT TO IB

Jan 24, 2024

Code OP2R

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

Jan 24, 2024

Code OPNS

EXAMINERS AMENDMENT -WRITTEN

Jan 08, 2024

Code CNEA

EXAMINERS AMENDMENT E-MAILED

Jan 08, 2024

Code GNEA

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Jan 08, 2024

Code GNEN

EXAMINER'S AMENDMENT ENTERED

Jan 08, 2024

Code XAEC

EXAMINERS AMENDMENT -WRITTEN

Jan 08, 2024

Code CNEA

EXAMINERS AMENDMENT E-MAILED

Jan 08, 2024

Code GNEA

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Jan 08, 2024

Code GNEN

EXAMINER'S AMENDMENT ENTERED

Jan 08, 2024

Code XAEC

APPROVED FOR PUB - PRINCIPAL REGISTER

Jan 08, 2024

Code CNSA

FINAL REFUSAL WRITTEN

Nov 23, 2023

Code CNFR

FINAL REFUSAL E-MAILED

Nov 23, 2023

Code GNFR

NOTIFICATION OF FINAL REFUSAL EMAILED

Nov 23, 2023

Code GNFN

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Oct 25, 2023

Code TROA

CORRESPONDENCE RECEIVED IN LAW OFFICE

Oct 25, 2023

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Oct 25, 2023

Code TEME

REFUSAL PROCESSED BY IB

Sep 13, 2023

Code RFNT

REFUSAL PROCESSED BY MPU

Aug 24, 2023

Code RFRR

NON-FINAL ACTION MAILED - REFUSAL SENT TO IB

Aug 24, 2023

Code RFCS

NON-FINAL ACTION (IB REFUSAL) PREPARED FOR REVIEW

Aug 02, 2023

Code RFCR

NON-FINAL ACTION WRITTEN

Aug 01, 2023

Code CNRT

ASSIGNED TO EXAMINER

Jul 31, 2023

Code DOCK

APPLICATION FILING RECEIPT MAILED

Apr 04, 2023

Code MAFR

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Mar 31, 2023

Code NWOS

SN ASSIGNED FOR SECT 66A APPL FROM IB

Mar 30, 2023

Code REPR

Other Marks by Espressif Systems (Shanghai) Co., Ltd.

Additional USPTO filings from the same owner.

ESP

ESPRESSIF

88064254

ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

REGISTERED

LOG

LogoMark

88064351

ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

REGISTERED

BLU

BLUFI

98030679

Espressif Systems (Shanghai) Co., Ltd.

REGISTERED

WRO

WROOM

79357659

Espressif Systems (Shanghai) Co., Ltd.

REGISTERED

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Other Marks by Laura M. Konkel

Additional USPTO filings handled by the same attorney of record.

MAT

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FLE

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LET'S GET TO NEXT

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REGISTERED

ESP-IDF

What to file next

Full Goods & Services

Filing Basis & Declarations

Other Marks by Espressif Systems (Shanghai) Co., Ltd.

Other Marks in Class 009 — Electronics, software & scientific instruments

Other Marks by Laura M. Konkel

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