Who owns the PHDLEAK trademark?

The PHDLEAK trademark is owned by Leak Detection Technologies Inc..

What class is the PHDLEAK trademark registered in?

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

What is the serial number for PHDLEAK?

The USPTO serial number for PHDLEAK is 99374726.

What is the registration number for PHDLEAK?

PHDLEAK is registered under USPTO registration number 8291216.

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Updated Oct 9, 2026·33 searches this week

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PHD

USPTO Trademark Record

REGISTERED

PHDLEAK

SN 99374726·Reg 8291216·Filed Sep 04, 2025

Owner Leak Detection Technologies Inc.

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.

PHDLEAK (Serial No. 99374726), Registration No. 8291216, is a registered US trademark filed on Sep 04, 2025 by Leak Detection Technologies Inc.. This trademark covers Class 042 (Scientific, technology & SaaS services).

early section 8: June 09, 2032

Mark Intelligence

PHDLEAK (Reg. #8291216) is a registered US trademark that has been protecting its owner, Leak Detection Technologies Inc., since 2025. 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.... The mark faced 1 opposition proceeding during prosecution.

FILED

Sep 04, 2025

SERIAL

99374726

REG#

8291216

REGISTERED

Jun 09, 2026

Filing Information

StatusREGISTERED

Filing DateSep 04, 2025

Serial Number99374726

Registration No.8291216

Registration DateJun 09, 2026

Status DateJun 09, 2026

Published for OppositionApr 21, 2026

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Sep 15, 2015

First use in commerce: Sep 15, 2015

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

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Status History

19 events

REGISTERED-PRINCIPAL REGISTER

Jun 09, 2026

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Jun 09, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Jun 08, 2026

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Jun 08, 2026

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jun 08, 2026

TEAS CHANGE OF CORRESPONDENCE RECEIVED

PUBLISHED FOR OPPOSITION

Apr 21, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Apr 21, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Apr 15, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

TEAS/EMAIL CORRESPONDENCE ENTERED

Mar 23, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

APPROVED FOR PUB - PRINCIPAL REGISTER

Mar 23, 2026

APPROVED FOR PUB - PRINCIPAL REGISTER

CORRESPONDENCE RECEIVED IN LAW OFFICE

Mar 22, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Mar 22, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

NON-FINAL ACTION WRITTEN

Jan 22, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jan 22, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jan 22, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Jan 20, 2026

ASSIGNED TO EXAMINER

NEW APPLICATION ENTERED

Sep 04, 2025

NEW APPLICATION ENTERED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Sep 04, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

APPLICATION FILING RECEIPT MAILED

Sep 04, 2025

APPLICATION FILING RECEIPT MAILED

Other Marks by Leak Detection Technologies Inc.

Additional USPTO filings from the same owner.

LEA

LEAK DETECTION TECHNOLOGIES

99374736

Leak Detection Technologies Inc.

REGISTERED

DPL

DPLEAK

99374706

Leak Detection Technologies Inc.

REGISTERED

MDL

MDLEAK

77375144

LEAK DETECTION TECHNOLOGIES, INC.

REGISTERED

MCL

MCLEAK

99374651

Leak Detection Technologies Inc.

PENDING

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PHD

PHDLEAK

85589545

LEAK DETECTION TECHNOLOGIES, INC.

ABANDONED

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