Who owns the KEYSTONE trademark?

The KEYSTONE trademark is owned by Keystone Strategy LLC.

What class is the KEYSTONE trademark registered in?

The KEYSTONE trademark is registered in Class 042 (Scientific, technology & SaaS services).

What is the serial number for KEYSTONE?

The USPTO serial number for KEYSTONE is 99537188.

What is the registration number for KEYSTONE?

KEYSTONE is registered under USPTO registration number 0.

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Home Search: KEYSTONEKEYSTONE #99537188

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Updated Oct 1, 2026·27 searches this week

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KEY

USPTO Trademark Record

PENDING

KEYSTONE

SN 99537188·Reg 0·Filed Dec 09, 2025

Owner Keystone Strategy 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.

KEYSTONE (Serial No. 99537188), Registration No. 0, is a pending US trademark filed on Dec 09, 2025 by Keystone Strategy LLC. This trademark covers Class 042 (Scientific, technology & SaaS services).

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Mark Intelligence

KEYSTONE (Reg. #0) is a pending US trademark that was filed in 2025 and is currently under USPTO examination. The mark covers Class 042 (Scientific, technology & SaaS services). Goods and services include Scientific and technological services and research and design relating thereto; industrial analysis, industrial research....

FILED

Dec 09, 2025

SERIAL

99537188

REG#

REGISTERED

Dec 31, 1969

Filing Information

StatusPENDING

Filing DateDec 09, 2025

Serial Number99537188

Registration No.0

Registration DateDec 31, 1969

Status DateJul 14, 2026

Mark TypeStandard characters

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application Currently

International Filings

Madrid Protocol1 filings

This mark has 1 Madrid Protocol filing on record with the USPTO.

1929781

480Jun 09, 2026

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: Feb 15, 2023

First use in commerce: Feb 15, 2023

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

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Status History

15 events

SUSPENSION LETTER WRITTEN

Jul 14, 2026

SUSPENSION LETTER WRITTEN

LETTER OF SUSPENSION E-MAILED

Jul 14, 2026

LETTER OF SUSPENSION E-MAILED

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

Jul 14, 2026

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jul 13, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jul 13, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Jul 13, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

Apr 07, 2026

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

Apr 07, 2026

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

NON-FINAL ACTION WRITTEN

Jan 14, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jan 14, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jan 14, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Jan 13, 2026

ASSIGNED TO EXAMINER

NEW APPLICATION ENTERED

Dec 09, 2025

NEW APPLICATION ENTERED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Dec 09, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

APPLICATION FILING RECEIPT MAILED

Dec 09, 2025

APPLICATION FILING RECEIPT MAILED

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Additional USPTO filings from the same owner.

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DEE

DEEP ENTERPRISE

99028215

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PENDING

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