Who owns the 21CT trademark?

The 21CT trademark is owned by ToxStrategies, LLC.

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).

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 Nov 1, 2026·27 searches this week

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Section 8 declaration window

July 28, 2032

2095 days remaining

21C

21CT

REGISTERED

Serial: 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.

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 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.

Status History

10 events

REGISTERED-PRINCIPAL REGISTER

Jul 28, 2026

Code R.PR

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Jul 28, 2026

Code NRCC

PUBLISHED FOR OPPOSITION

Jun 09, 2026

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jun 09, 2026

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jun 03, 2026

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

May 14, 2026

Code CNSA

ASSIGNED TO EXAMINER

May 09, 2026

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Apr 30, 2026

Code NWOS

NEW APPLICATION ENTERED

Jan 12, 2026

Code NWAP

APPLICATION FILING RECEIPT MAILED

Jan 12, 2026

Code MAFR

21CT

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Full Goods & Services

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