KEITHLEY

LIVE

Serial Number

72164250

Owner

KEITHLEY INSTRUMENTS, INC.

Attorney

Danielle Mattessich

Filing Date

Mar 8, 1963

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KEITHLEY Trademark

Serial Number: 72164250 • Registration: 0773168

KEITHLEY is a trademark filed by KEITHLEY INSTRUMENTS, INC. on March 8, 1963. The trademark is classified under Class 1 (Chemicals). The application is currently registered and active.

Trademark Classes

Class 1 - Chemicals

Chemical products for industry, science, photography, agriculture, horticulture and forestry

Owner Contact Info

KEITHLEY INSTRUMENTS, INC. (31 trademarks)

CLEVELAND, OH 44139

Entity Type: 03

KEITHLEY INSTRUMENTS, LLC (13 trademarks)

28775 AURORA ROAD
SOLON, OH 44139

Entity Type: 16

Legal Representation

Attorney of Record

Danielle Mattessich

222 trademarks filed View all →

Correspondence Address

Danielle Mattessich Merchant & Gould P.C.

150 South Fifth Street, Suite 2200

Minneapolis, MN 55402

United States

Trademark Details

Filing Date

March 8, 1963

Registration Date

July 14, 1964

Goods & Services

Electrical and Electronic Apparatus Including [ Signal Dividers, ] Amplifiers, Voltage Supplies, Relays, and Measuring Instruments Including Ammeters, Voltmeters, Ohmmeters, Electrometers, [ Static Meters, ] [and Electrical Bridges ] and Accessories

Filing History

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Sep 16, 2025 EWAF

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Sep 16, 2025 TCCA

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Sep 16, 2025 ARAA

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

Sep 16, 2025 REAP

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

Sep 25, 2024 NA89

REGISTERED AND RENEWED (FOURTH RENEWAL - 10 YRS)

Sep 25, 2024 RNL4

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

Sep 25, 2024 89AG

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Sep 25, 2024 APRE

TEAS SECTION 8 & 9 RECEIVED

Jul 9, 2024 E89R

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

Jul 14, 2023 REM2

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 7, 2017 TCCA

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Jul 26, 2017 ASGN

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 19, 2016 ARAA

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

Aug 19, 2016 REAP

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

Jun 17, 2014 NA89

REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)

Jun 17, 2014 RNL3

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

Jun 17, 2014 89AG

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jun 17, 2014 APRE

TEAS SECTION 8 & 9 RECEIVED

May 30, 2014 E89R

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Sep 20, 2011 ARAA

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

Sep 20, 2011 REAP

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Feb 21, 2011 CHAN

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Feb 21, 2011 COAR

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Feb 21, 2011 ARAA

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

Feb 21, 2011 REAP

CASE FILE IN TICRS

Nov 4, 2008 CFIT

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

Jun 11, 2004 RNL2

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

Jun 11, 2004 89AG

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

Apr 19, 2004 89AF

TEAS SECTION 8 & 9 RECEIVED

Apr 19, 2004 E89R

REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS)

Nov 27, 1984 REN1

REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8

Jul 13, 1984 9.AF

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