Who owns the DDL INDEX trademark?

The DDL INDEX trademark is owned by Cornerstone Research, Inc..

What is the serial number for DDL INDEX?

The USPTO serial number for DDL INDEX is 86124425.

What is the registration number for DDL INDEX?

DDL INDEX is registered under USPTO registration number 4923228.

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Home Search: DDL INDEXDDL INDEX #86124425

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Updated Oct 13, 2026·36 searches this week

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DDL

USPTO Trademark Record

REGISTERED

DDL INDEX

Q: What class is the DDL INDEX trademark registered in?

The DDL INDEX trademark is registered in Class 036 (Insurance, financial & real estate services), Class 045 (Legal, security & personal social services).

SN 86124425·Reg 4923228·Filed Nov 20, 2013

Owner Cornerstone Research, Inc.

Financial, monetary and banking services; insurance services; real estate services.; Legal services; security services for the physical protection of tangible property and individuals; dating services, online social networking services; funerary services; babysitting.

DDL INDEX (Serial No. 86124425), Registration No. 4923228, is a registered US trademark filed on Nov 20, 2013 by Cornerstone Research, Inc.. This trademark covers Class 036 (Insurance, financial & real estate services), Class 045 (Legal, security & personal social services).

Section 8/9 declaration window: March 24, 2036

Mark Intelligence

DDL INDEX (Reg. #4923228) is a registered US trademark that has been protecting its owner, Cornerstone Research, Inc., since 2013. The mark covers Class 036 (Insurance, financial & real estate services) and Class 045 (Legal, security & personal social services) respectively. Goods and services include Financial, monetary and banking services; insurance services; real estate services.; Legal services; security services f.... The mark faced 1 opposition proceeding during prosecution.

FILED

Nov 20, 2013

SERIAL

86124425

REG#

4923228

REGISTERED

Mar 22, 2016

Filing Information

StatusREGISTERED

Filing DateNov 20, 2013

Serial Number86124425

Registration No.4923228

Registration DateMar 22, 2016

Status DateFeb 24, 2026

Published for OppositionApr 28, 2015

Filing Basis & Declarations

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

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 036Insurance, financial & real estate services

US codes: 100, 101, 102

First use anywhere: Oct 01, 2015

First use in commerce: Oct 01, 2015

Financial, monetary and banking services; insurance services; real estate services.

Class 045Legal, security & personal social services

US codes: 100, 101

First use anywhere: Oct 01, 2015

First use in commerce: Oct 01, 2015

Legal services; security services for the physical protection of tangible property and individuals; dating services, online social networking services; funerary services; babysitting.

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

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Status History

44 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Feb 24, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

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

Feb 24, 2026

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

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Feb 24, 2026

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

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

Feb 24, 2026

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

TEAS SECTION 8 & 9 RECEIVED

Dec 01, 2025

TEAS SECTION 8 & 9 RECEIVED

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

Mar 22, 2025

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Sep 06, 2022

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

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

Sep 06, 2022

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

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Sep 06, 2022

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

TEAS SECTION 8 & 15 RECEIVED

Mar 15, 2022

TEAS SECTION 8 & 15 RECEIVED

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

Mar 22, 2021

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

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

Apr 25, 2019

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 25, 2019

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Apr 25, 2019

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Apr 25, 2019

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

REGISTERED-PRINCIPAL REGISTER

Mar 22, 2016

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Feb 18, 2016

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Feb 17, 2016

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

STATEMENT OF USE PROCESSING COMPLETE

Jan 30, 2016

STATEMENT OF USE PROCESSING COMPLETE

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Jan 28, 2016

CASE ASSIGNED TO INTENT TO USE PARALEGAL

TEAS STATEMENT OF USE RECEIVED

Dec 16, 2015

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

Dec 16, 2015

USE AMENDMENT FILED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Jun 23, 2015

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

Apr 28, 2015

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Apr 28, 2015

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Apr 08, 2015

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Mar 21, 2015

APPROVED FOR PUB - PRINCIPAL REGISTER

LAW OFFICE PUBLICATION REVIEW COMPLETED

Mar 21, 2015

LAW OFFICE PUBLICATION REVIEW COMPLETED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Mar 18, 2015

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Mar 18, 2015

TEAS/EMAIL CORRESPONDENCE ENTERED

ASSIGNED TO LIE

Mar 16, 2015

ASSIGNED TO LIE

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Mar 06, 2015

TEAS RESPONSE TO OFFICE ACTION RECEIVED

NON-FINAL ACTION WRITTEN

Sep 18, 2014

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Sep 18, 2014

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Sep 18, 2014

NOTIFICATION OF NON-FINAL ACTION E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Aug 25, 2014

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Aug 25, 2014

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Aug 25, 2014

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Feb 28, 2014

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Feb 28, 2014

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Feb 28, 2014

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Feb 19, 2014

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Dec 05, 2013

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Nov 23, 2013

NEW APPLICATION ENTERED

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