Who owns the LET'S ENCRYPT trademark?

The LET'S ENCRYPT trademark is owned by Internet Security Research Group.

What is the serial number for LET'S ENCRYPT?

The USPTO serial number for LET'S ENCRYPT is 88029629.

What is the registration number for LET'S ENCRYPT?

LET'S ENCRYPT is registered under USPTO registration number 5689946.

LET

USPTO Trademark Record

REGISTERED

LET'S ENCRYPT

Q: What class is the LET'S ENCRYPT trademark registered in?

The LET'S ENCRYPT trademark is registered in Class 042 (Scientific, technology & SaaS services), Class 045 (Legal, security & personal social services).

SN 88029629·Reg 5689946·Filed Jul 09, 2018

Owner Internet Security Research Group

Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software.; Legal services; security services for the physical protection of tangible property and individuals; dating services, online social networking services; funerary services; babysitting.

LET'S ENCRYPT (Serial No. 88029629), Registration No. 5689946, is a registered US trademark filed on Jul 09, 2018 by Internet Security Research Group. This trademark covers Class 042 (Scientific, technology & SaaS services), Class 045 (Legal, security & personal social services).

Section 8/9 declaration window: March 05, 2029

Mark Intelligence

LET'S ENCRYPT (Reg. #5689946) is a registered US trademark that has been protecting its owner, Internet Security Research Group, since 2018. The mark covers Class 042 (Scientific, technology & SaaS services) and Class 045 (Legal, security & personal social services) respectively. Goods and services include Scientific and technological services and research and design relating thereto; industrial analysis, industrial research.... The mark faced 1 opposition proceeding during prosecution.

FILED

Jul 09, 2018

SERIAL

88029629

REG#

5689946

REGISTERED

Mar 05, 2019

Owner

Applicant

Internet Security Research Group

Entity

Corporation

State

Address

PMB 77519, 548 Market St, San Francisco, CA, 94104

Country

Attorney

NameBenjamin A. Costa

Law firm

Benjamin A. Costa Ridder, Costa & Johnstone LLP

Address

440 N Barranca Ave, #7550, Covina, CA 91723, United States

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Filing Information

StatusREGISTERED

Filing DateJul 09, 2018

Serial Number88029629

Registration No.5689946

Registration DateMar 05, 2019

Status DateDec 12, 2024

Published for OppositionDec 18, 2018

Next RenewalMarch 05, 2029

Mark TypeDesign with words

Status DescriptionLive and registered, Section 8 and 15 accepted

Filing Signals

FILED

2018

YEARS AGO

CLASSES

MADRID FILINGS

Opposed 1× during prosecution

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Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Jul 07, 2016

First use in commerce: Jul 07, 2016

Class 045Legal, security & personal social services

US codes: 100, 101

First use anywhere: Jul 07, 2016

First use in commerce: Jul 07, 2016

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.

Status History

28 events

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

Aug 22, 2025

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 22, 2025

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 22, 2025

TEAS CHANGE OF CORRESPONDENCE RECEIVED

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

Dec 12, 2024

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

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

Dec 12, 2024

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Oct 15, 2024

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 15 RECEIVED

Apr 17, 2024

TEAS SECTION 8 & 15 RECEIVED

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

Mar 05, 2024

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

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

Dec 15, 2022

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Dec 15, 2022

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Dec 15, 2022

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Mar 08, 2022

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Mar 08, 2022

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 08, 2022

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 08, 2022

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Mar 08, 2022

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

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

Jun 25, 2021

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Jun 25, 2021

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jun 25, 2021

TEAS CHANGE OF CORRESPONDENCE RECEIVED

REGISTERED-PRINCIPAL REGISTER

Mar 05, 2019

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Dec 18, 2018

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Dec 18, 2018

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Nov 28, 2018

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Nov 05, 2018

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Oct 27, 2018

ASSIGNED TO EXAMINER

NOTICE OF DESIGN SEARCH CODE E-MAILED

Jul 14, 2018

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jul 13, 2018

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Jul 12, 2018

NEW APPLICATION ENTERED

LET'S ENCRYPT

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