Who owns the SEN X trademark?

The SEN X trademark is owned by ETHERFAX, LLC.

What is the serial number for SEN X?

The USPTO serial number for SEN X is 87688688.

What is the registration number for SEN X?

SEN X is registered under USPTO registration number 5704389.

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Home Search: SEN XSEN X #87688688

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Updated Oct 25, 2026·16 searches this week

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SEN

USPTO Trademark Record

REGISTERED

SEN X

Q: What class is the SEN X trademark registered in?

The SEN X trademark is registered in Class 042 (Scientific, technology & SaaS services), Class 038 (Telecommunications services).

SN 87688688·Reg 5704389·Filed Nov 17, 2017

Owner ETHERFAX, LLC

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.; Telecommunications.

SEN X (Serial No. 87688688), Registration No. 5704389, is a registered US trademark filed on Nov 17, 2017 by ETHERFAX, LLC. This trademark covers Class 042 (Scientific, technology & SaaS services), Class 038 (Telecommunications services).

Section 8/9 declaration window: March 19, 2029

Mark Intelligence

SEN X (Reg. #5704389) is a registered US trademark that has been protecting its owner, ETHERFAX, LLC, since 2017. The mark covers Class 042 (Scientific, technology & SaaS services) and Class 038 (Telecommunications services) respectively. Goods and services include Scientific and technological services and research and design relating thereto; industrial analysis, industrial research.... The mark faced 1 opposition proceeding during prosecution.

FILED

Nov 17, 2017

SERIAL

87688688

REG#

5704389

REGISTERED

Mar 19, 2019

Filing Information

StatusREGISTERED

Filing DateNov 17, 2017

Serial Number87688688

Registration No.5704389

Registration DateMar 19, 2019

Status DateDec 23, 2025

Published for OppositionMay 15, 2018

Filing Basis & Declarations

Use Application CurrentlySection 8 AcceptedSection 15 Acknowledged

International Filings

Madrid Protocol2 filings

This mark has 2 Madrid Protocol filings on record with the USPTO.

1416157

480May 17, 2018

Source: USPTO Madrid International Filing Requests

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Jan 03, 2019

First use in commerce: Jan 03, 2019

Class 038Telecommunications services

US codes: 100, 101, 104

First use anywhere: Jan 03, 2019

First use in commerce: Jan 03, 2019

Telecommunications.

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

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Status History

32 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Dec 23, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

Dec 23, 2025

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Dec 23, 2025

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

TEAS SECTION 8 & 15 RECEIVED

Sep 19, 2025

TEAS SECTION 8 & 15 RECEIVED

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

Mar 19, 2024

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Nov 16, 2022

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

REGISTERED-PRINCIPAL REGISTER

Mar 19, 2019

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Feb 09, 2019

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Feb 08, 2019

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Jan 29, 2019

CASE ASSIGNED TO INTENT TO USE PARALEGAL

STATEMENT OF USE PROCESSING COMPLETE

Jan 29, 2019

STATEMENT OF USE PROCESSING COMPLETE

TEAS STATEMENT OF USE RECEIVED

Jan 04, 2019

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

Jan 04, 2019

USE AMENDMENT FILED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Jul 10, 2018

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

POST PUBLICATION AMENDMENT - ENTERED

May 17, 2018

POST PUBLICATION AMENDMENT - ENTERED

ASSIGNED TO PETITION STAFF

May 17, 2018

ASSIGNED TO PETITION STAFF

TEAS POST PUBLICATION AMENDMENT RECEIVED

May 16, 2018

TEAS POST PUBLICATION AMENDMENT RECEIVED

PUBLISHED FOR OPPOSITION

May 15, 2018

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

May 15, 2018

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Apr 25, 2018

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO LIE

Apr 09, 2018

ASSIGNED TO LIE

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 02, 2018

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS/EMAIL CORRESPONDENCE ENTERED

Mar 28, 2018

TEAS/EMAIL CORRESPONDENCE ENTERED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Mar 27, 2018

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Mar 27, 2018

TEAS RESPONSE TO OFFICE ACTION RECEIVED

NON-FINAL ACTION WRITTEN

Mar 06, 2018

NON-FINAL ACTION WRITTEN

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 06, 2018

NOTIFICATION OF NON-FINAL ACTION E-MAILED

NON-FINAL ACTION E-MAILED

Mar 06, 2018

NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Mar 03, 2018

ASSIGNED TO EXAMINER

NOTICE OF DESIGN SEARCH CODE E-MAILED

Dec 01, 2017

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Nov 30, 2017

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Nov 21, 2017

NEW APPLICATION ENTERED

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