Who owns the LIST HYGIENE trademark?

The LIST HYGIENE trademark is owned by PRISM FLY LLC.

What class is the LIST HYGIENE trademark registered in?

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

What is the serial number for LIST HYGIENE?

The USPTO serial number for LIST HYGIENE is 99421947.

What is the registration number for LIST HYGIENE?

LIST HYGIENE is registered under USPTO registration number 8231855.

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Home Search: LIST HYGIENELIST HYGIENE #99421947

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Updated Sep 21, 2026·21 searches this week

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LIS

USPTO Trademark Record

REGISTERED

LIST HYGIENE

SN 99421947·Reg 8231855·Filed Sep 30, 2025

Owner PRISM FLY 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.

LIST HYGIENE (Serial No. 99421947), Registration No. 8231855, is a registered US trademark filed on Sep 30, 2025 by PRISM FLY LLC. This trademark covers Class 042 (Scientific, technology & SaaS services).

early section 8: April 28, 2032

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LIST HYGIENE (Reg. #8231855) is a registered US trademark that has been protecting its owner, PRISM FLY LLC, 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 30, 2025

SERIAL

99421947

REG#

8231855

REGISTERED

Apr 28, 2026

Filing Information

StatusREGISTERED

Filing DateSep 30, 2025

Serial Number99421947

Registration No.8231855

Registration DateApr 28, 2026

Status DateApr 28, 2026

Published for OppositionMar 10, 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: May 02, 2025

First use in commerce: May 02, 2025

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

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Status History

16 events

REGISTERED-PRINCIPAL REGISTER

Apr 28, 2026

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Apr 28, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

PUBLISHED FOR OPPOSITION

Mar 10, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Mar 10, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Mar 04, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Feb 13, 2026

APPROVED FOR PUB - PRINCIPAL REGISTER

NON-FINAL ACTION WRITTEN

Feb 12, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Feb 12, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Feb 12, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Feb 12, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Feb 12, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Feb 12, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

ASSIGNED TO EXAMINER

Feb 04, 2026

ASSIGNED TO EXAMINER

NEW APPLICATION ENTERED

Sep 30, 2025

NEW APPLICATION ENTERED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Sep 30, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

APPLICATION FILING RECEIPT MAILED

Sep 30, 2025

APPLICATION FILING RECEIPT MAILED

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