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Official data from USPTO

CHELEX

Did you know this trademark is already registered in United States?

Before investing in name, identity, and promotion, validate collision risk and registration strategy to avoid wasting time and budget.

Active USPTO registrationType: WordOffice: United States

Quick snapshot

CHELEX

ST13

US500000073552802

Class

1

Filing

73552802

Registration

1397266

Risk and opportunity diagnosis

Executive reading for naming, filing, and monitoring decisions.

USPTO status

Active USPTO registration

Case type

Application and registration

Recorded events

28

Latest update

08/11/2026

Trademark type

Word

Nice classes

1

Filing date

08/09/1985

Registration date

06/17/1986

Expiration date

-

Complete case details

Structured fields from the responsible authority and the official record.

Status date

07/22/2026

Last transaction

08/11/2026

Responsible office

United States Patent and Trademark Office

Status code

800

Official register

Principal Register

First use anywhere

1958-00-00

First use in commerce

1958-00-00

Drawing code

1

Owner type

03

Owner location

HERCULES, CA, US

Current location

PUBLICATION AND ISSUE SECTION

Holders and representatives

Holders

BIO-RAD LABORATORIES, INC.
BIO-RAD LABORATORIES, INC.

Representatives

Lamara Parnell Procopio, Cory, Hargreaves & Savitch LLP

Technical classification

Nice Classes

Class 1

Vienna Codes

No Vienna codes available.

Goods and services

Class 1

ION EXCHANGE RESINS FOR RESEARCH AND ANALYTICAL LABORATORY USE

Publications

History of USPTO decisions and trademark events.

28 publications found

NA89

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

07/22/2026

RNL3

REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)

07/22/2026

89AG

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

07/22/2026

APRE

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

07/22/2026

E89R

TEAS SECTION 8 & 9 RECEIVED

05/21/2026

REM2

COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED

06/17/2025

NA89

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

02/16/2017

RNL2

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

02/16/2017

89AG

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

02/16/2017

APRE

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

02/16/2017

E89R

TEAS SECTION 8 & 9 RECEIVED

12/14/2016

CFIT

CASE FILE IN TICRS

06/13/2008

UNDN

UNDELIVERABLE MAIL - NO ACTION TAKEN

06/05/2006

MAIL

PAPER RECEIVED

05/30/2006

RNL1

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

04/14/2006

89AG

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

04/14/2006

PLGL

ASSIGNED TO PARALEGAL

04/11/2006

89AF

REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED

01/23/2006

MAIL

PAPER RECEIVED

01/23/2006

C15A

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

02/11/1992

815F

REGISTERED - SEC. 8 (6-YR) & SEC. 15 FILED

09/23/1991

R.PR

REGISTERED-PRINCIPAL REGISTER

06/17/1986

PUBO

PUBLISHED FOR OPPOSITION

03/25/1986

NPUB

NOTICE OF PUBLICATION

02/24/1986

CNSA

APPROVED FOR PUB - PRINCIPAL REGISTER

01/30/1986

CRFA

CORRESPONDENCE RECEIVED IN LAW OFFICE

01/28/1986

CNRT

NON-FINAL ACTION MAILED

10/22/1985

DOCK

ASSIGNED TO EXAMINER

10/17/1985

Continuous trademark protection

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