EWAF
TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
01/28/2026
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Official data from USPTO
PLAQUENIL
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Active USPTO registrationType: CombinedOffice: United States
Risk and opportunity diagnosis
Executive reading for naming, filing, and monitoring decisions.
USPTO status
Active USPTO registration
Case type
Application and registration
Recorded events
43
Latest update
03/19/2026
Trademark type
Combined
Nice classes
5, 18
Filing date
08/24/1951
Registration date
07/29/1952
Expiration date
-
Complete case details
Structured fields from the responsible authority and the official record.
Status date
02/18/2023
Last transaction
03/19/2026
Responsible office
United States Patent and Trademark Office
Status code
800
Official register
Principal Register
First use anywhere
07/17/1951
First use in commerce
07/17/1951
Drawing code
5
Owner type
99
Owner location
Luxembourg, LU
Current location
GENERIC WEB UPDATE
Holders and representatives
Holders
CONCORDIA PHARMACEUTICALS INC.
SANOFI-AVENTIS U.S. LLC
SANOFI-SYNTHELABO INC.
STERLING WINTHROP INC.
WINTHROP-STEARNS INC.
Representatives
Caroline Duncan Baker Botts L.L.P.
Technical classification
Nice Classes
Class 5Class 18
Vienna Codes
No Vienna codes available.
Goods and services
Class 5
No specification.
Class 18
ANTIMALARIAL PREPARATION
Publications
History of USPTO decisions and trademark events.
43 publications found
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
01/28/2026
ECDR
TEAS CHANGE OF DOMESTIC REPRESENTATIVES ADDRESS
01/28/2026
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
01/28/2026
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
01/28/2026
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
01/28/2026
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
01/28/2026
NA89
NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED
02/19/2023
RNL5
REGISTERED AND RENEWED (FIFTH RENEWAL - 10 YRS)
02/18/2023
89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
02/18/2023
APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
02/17/2023
E89R
TEAS SECTION 8 & 9 RECEIVED
08/02/2022
REM2
COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED
07/29/2021
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
06/09/2021
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
09/12/2018
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
02/14/2017
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
02/14/2017
C.7C
NEW CERTIFICATE UNDER SECTION 7 - PROCESSED
08/24/2016
APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
08/21/2016
ES7R
TEAS SECTION 7 REQUEST RECEIVED
06/09/2016
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
03/02/2016
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
11/18/2015
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
10/28/2015
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
06/18/2015
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
06/18/2015
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
04/29/2015
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
04/22/2013
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
04/22/2013
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
04/17/2013
ASCK
ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY
04/10/2013
NA89
NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED
06/16/2012
RNL4
REGISTERED AND RENEWED (FOURTH RENEWAL - 10 YRS)
06/16/2012
89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
06/16/2012
E89R
TEAS SECTION 8 & 9 RECEIVED
06/15/2012
CFIT
CASE FILE IN TICRS
10/10/2008
ASGN
AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP
11/29/2006
RNL3
REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)
11/02/2002
89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
11/02/2002
89AF
REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED
08/12/2002
PAPER RECEIVED
08/01/2002
RNL2
REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)
07/14/1992
9.AF
REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8
06/08/1992
REN1
REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS)
07/29/1972
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