Who owns the SISTER SCIENTIST trademark?

The SISTER SCIENTIST trademark is owned by Douglas, Erica M..

What class is the SISTER SCIENTIST trademark registered in?

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

What is the serial number for SISTER SCIENTIST?

The USPTO serial number for SISTER SCIENTIST is 86443789.

What is the registration number for SISTER SCIENTIST?

SISTER SCIENTIST is registered under USPTO registration number 4971450.

Sealvo

Home Search: SISTER SCIENTISTSISTER SCIENTIST #86443789

Back

Updated Sep 27, 2026·9 searches this week

View on USPTO TSDR Find similar marks

SIS

USPTO Trademark Record

REGISTERED

SISTER SCIENTIST

SN 86443789·Reg 4971450·Filed Nov 04, 2014

Owner Douglas, Erica M.

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

SISTER SCIENTIST (Serial No. 86443789), Registration No. 4971450, is a registered US trademark filed on Nov 04, 2014 by Douglas, Erica M.. This trademark covers Class 041 (Education & entertainment services).

Section 8/9 declaration window: June 09, 2036

Conflict Analysis

Full conflict analysis for SISTER SCIENTIST (SN 86443789) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

SISTER SCIENTIST (Reg. #4971450) is a registered US trademark that has been protecting its owner, Douglas, Erica M., since 2014. 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

Nov 04, 2014

SERIAL

86443789

REG#

4971450

REGISTERED

Jun 07, 2016

Filing Information

StatusREGISTERED

Filing DateNov 04, 2014

Serial Number86443789

Registration No.4971450

Registration DateJun 07, 2016

Status DateJan 28, 2026

Published for OppositionMar 22, 2016

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: Nov 19, 2013

First use in commerce: Jan 16, 2014

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

37 events

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

Jan 28, 2026

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

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Jan 28, 2026

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

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

Jan 28, 2026

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jan 26, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Oct 24, 2025

TEAS SECTION 8 & 9 RECEIVED

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

Jun 08, 2025

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Dec 17, 2021

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

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

Dec 17, 2021

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

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

Dec 17, 2021

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

TEAS SECTION 8 & 15 RECEIVED

Sep 17, 2021

TEAS SECTION 8 & 15 RECEIVED

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

Jun 07, 2021

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

REGISTERED-PRINCIPAL REGISTER

Jun 07, 2016

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Mar 22, 2016

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Mar 22, 2016

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Mar 02, 2016

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

LAW OFFICE PUBLICATION REVIEW COMPLETED

Feb 16, 2016

LAW OFFICE PUBLICATION REVIEW COMPLETED

ASSIGNED TO LIE

Feb 10, 2016

ASSIGNED TO LIE

APPROVED FOR PUB - PRINCIPAL REGISTER

Feb 01, 2016

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO LIE

Jan 25, 2016

ASSIGNED TO LIE

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jan 25, 2016

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Jan 25, 2016

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS REQUEST FOR RECONSIDERATION RECEIVED

Jan 12, 2016

TEAS REQUEST FOR RECONSIDERATION RECEIVED

FINAL REFUSAL WRITTEN

Sep 21, 2015

FINAL REFUSAL WRITTEN

FINAL REFUSAL E-MAILED

Sep 21, 2015

FINAL REFUSAL E-MAILED

NOTIFICATION OF FINAL REFUSAL EMAILED

Sep 21, 2015

NOTIFICATION OF FINAL REFUSAL EMAILED

ASSIGNED TO EXAMINER

Sep 01, 2015

ASSIGNED TO EXAMINER

Jul 02, 2015

ASSIGNED TO EXAMINER

TEAS/EMAIL CORRESPONDENCE ENTERED

Jun 22, 2015

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jun 21, 2015

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jun 21, 2015

CORRESPONDENCE RECEIVED IN LAW OFFICE

REMOVED FROM TEAS PLUS

Mar 04, 2015

REMOVED FROM TEAS PLUS

NON-FINAL ACTION WRITTEN

Mar 04, 2015

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Mar 04, 2015

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 04, 2015

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Feb 25, 2015

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Nov 14, 2014

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Nov 07, 2014

NEW APPLICATION ENTERED

Other Marks by Douglas, Erica M.

Additional USPTO filings from the same owner.

SIS

SISTER SCIENTIST

88851507

Douglas, Erica M.

REGISTERED

Other Marks in Class 041 — Education & entertainment services

Recently filed and registered marks in the same international class.

SCI

SCIENTIST³

79358847

Cosmo Bio Co., LTD.

REGISTERED

SIS

SISTER

88630383

SISTER HOLDINGS LIMITED

REGISTERED

SIS

SISTER

88630387

SISTER HOLDINGS LIMITED

REGISTERED

SIS

SISTER

88550208

SISTER HOLDINGS LIMITED

REGISTERED

SISTER SCIENTIST

Run a conflict check

Other Marks by Douglas, Erica M.

Other Marks in Class 041 — Education & entertainment services

Get pre-filing clearance

Search 15M+ trademarks

Resources

Company