Who owns the 21CT trademark?

The 21CT trademark is owned by ToxStrategies, LLC.

What is the serial number for 21CT?

The USPTO serial number for 21CT is 99589228.

What is the registration number for 21CT?

21CT is registered under USPTO registration number 8366117.

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Updated Sep 17, 2026·8 searches this week

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21C

USPTO Trademark Record

REGISTERED

21CT

Q: What class is the 21CT trademark registered in?

The 21CT trademark is registered in Class 041 (Education & entertainment services), Class 042 (Scientific, technology & SaaS services).

SN 99589228·Reg 8366117·Filed Jan 12, 2026

Owner ToxStrategies, LLC

Education; providing of training; entertainment; sporting and cultural activities.; 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.

21CT (Serial No. 99589228), Registration No. 8366117, is a registered US trademark filed on Jan 12, 2026 by ToxStrategies, LLC. This trademark covers Class 041 (Education & entertainment services), Class 042 (Scientific, technology & SaaS services).

early section 8: July 28, 2032

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Mark Intelligence

21CT (Reg. #8366117) is a registered US trademark that has been protecting its owner, ToxStrategies, LLC, since 2026. The mark covers Class 041 (Education & entertainment services) and Class 042 (Scientific, technology & SaaS services) respectively. Goods and services include Education; providing of training; entertainment; sporting and cultural activities.; Scientific and technological service.... The mark faced 1 opposition proceeding during prosecution.

FILED

Jan 12, 2026

SERIAL

99589228

REG#

8366117

REGISTERED

Jul 28, 2026

Filing Information

StatusREGISTERED

Filing DateJan 12, 2026

Serial Number99589228

Registration No.8366117

Registration DateJul 28, 2026

Status DateJul 28, 2026

Published for OppositionJun 09, 2026

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: May 31, 2018

First use in commerce: May 31, 2018

Education; providing of training; entertainment; sporting and cultural activities.

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: May 31, 2018

First use in commerce: May 31, 2018

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.