Who owns the WINDOWS trademark?

The WINDOWS trademark is owned by Microsoft Corporation.

What class is the WINDOWS trademark registered in?

The WINDOWS trademark is registered in Class 041 (Education & entertainment services).

What is the serial number for WINDOWS?

The USPTO serial number for WINDOWS is 75879977.

What is the registration number for WINDOWS?

WINDOWS is registered under USPTO registration number 2463526.

Sealvo

Home Search: WINDOWSWINDOWS #75879977

Back

Updated Sep 19, 2026·9 searches this week

View on USPTO TSDR Find similar marks

WIN

USPTO Trademark Record

REGISTERED

WINDOWS

SN 75879977·Reg 2463526·Filed Dec 22, 1999

Owner Microsoft Corporation

Education; providing of training; entertainment; sporting and cultural activities.

WINDOWS (Serial No. 75879977), Registration No. 2463526, is a registered US trademark filed on Dec 22, 1999 by Microsoft Corporation. This trademark covers Class 041 (Education & entertainment services).

Section 8/9 declaration window: June 26, 2031

Conflict Analysis

Full conflict analysis for WINDOWS (SN 75879977) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

WINDOWS (Reg. #2463526) is a registered US trademark that has been protecting its owner, Microsoft Corporation, since 1999. The mark covers Class 041 (Education & entertainment services). Goods and services include Education; providing of training; entertainment; sporting and cultural activities.. The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 22, 1999

SERIAL

75879977

REG#

2463526

REGISTERED

Jun 26, 2001

Filing Information

StatusREGISTERED

Filing DateDec 22, 1999

Serial Number75879977

Registration No.2463526

Registration DateJun 26, 2001

Status DateJul 07, 2021

Published for OppositionApr 03, 2001

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application CurrentlySection 8 AcceptedSection 15 Acknowledged

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: Jan 26, 1998

First use in commerce: Jan 26, 1998

Education; providing of training; entertainment; sporting and cultural activities.

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

Run a conflict check

Search by serial number, mark name, or logo. See conflicting marks ranked by risk with clear explanations of what contributed.

Run conflict check

Status History

60 events

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Mar 14, 2023

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Mar 14, 2023

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 14, 2023

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 14, 2023

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Mar 14, 2023

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Sep 13, 2021

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Sep 13, 2021

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Sep 13, 2021

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Sep 13, 2021

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Sep 13, 2021

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Sep 13, 2021

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jul 07, 2021

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

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

Jul 07, 2021

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

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

Jul 07, 2021

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

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

Jul 07, 2021

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

TEAS SECTION 8 & 9 RECEIVED

Mar 31, 2021

TEAS SECTION 8 & 9 RECEIVED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Oct 10, 2020

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Oct 10, 2020

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Oct 10, 2020

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Oct 10, 2020

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Oct 10, 2020

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

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

Jun 26, 2020

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

NOTICE OF SUIT

Feb 14, 2020

NOTICE OF SUIT

Nov 07, 2019

NOTICE OF SUIT

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

Dec 13, 2018

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Dec 13, 2018

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

NOTICE OF SUIT

Oct 04, 2018

NOTICE OF SUIT

May 04, 2018

NOTICE OF SUIT

Dec 28, 2017

NOTICE OF SUIT

May 05, 2017

NOTICE OF SUIT

May 05, 2017

NOTICE OF SUIT

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

Oct 26, 2016

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Oct 26, 2016

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

NOTICE OF SUIT

Mar 17, 2016

NOTICE OF SUIT

Mar 27, 2015

NOTICE OF SUIT

Feb 25, 2015

NOTICE OF SUIT

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Oct 13, 2014

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NOTICE OF SUIT

Dec 17, 2013

NOTICE OF SUIT

REVIEW OF CORRESPONDENCE COMPLETE

Mar 11, 2011

REVIEW OF CORRESPONDENCE COMPLETE

Mar 11, 2011

REVIEW OF CORRESPONDENCE COMPLETE

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

Mar 11, 2011

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

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Mar 11, 2011

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

TEAS SECTION 8 & 9 RECEIVED

Feb 14, 2011

TEAS SECTION 8 & 9 RECEIVED

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

Feb 14, 2011

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

NOTICE OF SUIT

Jun 16, 2008

NOTICE OF SUIT

Feb 12, 2008

NOTICE OF SUIT

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

Jul 21, 2007

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

ASSIGNED TO PARALEGAL

Jul 17, 2007

ASSIGNED TO PARALEGAL

TEAS SECTION 8 & 15 RECEIVED

Jun 22, 2007

TEAS SECTION 8 & 15 RECEIVED

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

Jun 22, 2007

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

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Dec 28, 2006

TEAS CHANGE OF CORRESPONDENCE RECEIVED

COUNTERCLAIM OPP. NO. 999999

Nov 19, 2004

COUNTERCLAIM OPP. NO. 999999

REGISTERED-PRINCIPAL REGISTER

Jun 26, 2001

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Apr 03, 2001

PUBLISHED FOR OPPOSITION

NOTICE OF PUBLICATION

Mar 21, 2001

NOTICE OF PUBLICATION

APPROVED FOR PUB - PRINCIPAL REGISTER

Dec 07, 2000

APPROVED FOR PUB - PRINCIPAL REGISTER

CORRESPONDENCE RECEIVED IN LAW OFFICE

Sep 05, 2000

CORRESPONDENCE RECEIVED IN LAW OFFICE

NON-FINAL ACTION MAILED

Jun 20, 2000

NON-FINAL ACTION MAILED

ASSIGNED TO EXAMINER

Jun 05, 2000

ASSIGNED TO EXAMINER

May 25, 2000

ASSIGNED TO EXAMINER

Other Marks by Microsoft Corporation

Additional USPTO filings from the same owner.

LOG

LogoMark

87863764

Microsoft Corporation

REGISTERED

AVO

AVOWED

90260164

Microsoft Corporation

REGISTERED

PER

PERFECT DARK ZERO

76978035

MICROSOFT CORPORATION

REGISTERED

99516754

Microsoft Corporation

REGISTERED

Other Marks in Class 041 — Education & entertainment services

Recently filed and registered marks in the same international class.

WIN

WINDOWS

87473722

Microsoft Corporation

REGISTERED

WIN

WINDOWS

90792752

Microsoft Corporation

PENDING

WIN

WINDOWS

90559773

MVP Sports Science Institute, Inc.

ABANDONED

WIN

WINDOWS TO INFINITY

79413365

ERM IBERIA SLU

REGISTERED

Other Marks by Karen Kreider Gaunt

Additional USPTO filings handled by the same attorney of record.

EST

ESTD 1870 GRAETER'S

99596493

REGISTERED

EST

ESTD 1870 GRAETER'S ICE CREAM

99596495

REGISTERED

74485534

REGISTERED

PEE

PEE-WEE HERMAN

85763634

REGISTERED

WINDOWS

Run a conflict check

Other Marks by Microsoft Corporation

Other Marks in Class 041 — Education & entertainment services

Other Marks by Karen Kreider Gaunt

Get pre-filing clearance

Search 15M+ trademarks

Resources

Company