Who owns the COSIN trademark?

The COSIN trademark is owned by Chen Yikai.

What class is the COSIN trademark registered in?

The COSIN trademark is registered in Class 007 (Machines, machine tools & power-operated tools).

What is the serial number for COSIN?

The USPTO serial number for COSIN is 88388605.

What is the registration number for COSIN?

COSIN is registered under USPTO registration number 6016781.

Sealvo

Home Search: COSINCOSIN #88388605

Back

Updated Sep 19, 2026·17 searches this week

View on USPTO TSDR Find similar marks

COS

USPTO Trademark Record

REGISTERED

COSIN

SN 88388605·Reg 6016781·Filed Apr 16, 2019

Owner Chen Yikai

Machines, machine tools, power-operated tools; motors and engines, except for land vehicles; machine coupling and transmission components, except for land vehicles; agricultural implements, other than hand-operated hand tools; incubators for eggs; automatic vending machines.

COSIN (Serial No. 88388605), Registration No. 6016781, is a registered US trademark filed on Apr 16, 2019 by Chen Yikai. This trademark covers Class 007 (Machines, machine tools & power-operated tools).

Section 8/9 declaration window: March 25, 2030

Conflict Analysis

Full conflict analysis for COSIN (SN 88388605) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

COSIN (Reg. #6016781) is a registered US trademark that has been protecting its owner, Chen Yikai, since 2019. The mark covers Class 007 (Machines, machine tools & power-operated tools). Goods and services include Machines, machine tools, power-operated tools; motors and engines, except for land vehicles; machine coupling and transm.... The mark faced 1 opposition proceeding during prosecution.

FILED

Apr 16, 2019

SERIAL

88388605

REG#

6016781

REGISTERED

Mar 24, 2020

Filing Information

StatusREGISTERED

Filing DateApr 16, 2019

Serial Number88388605

Registration No.6016781

Registration DateMar 24, 2020

Status DateApr 06, 2026

Published for OppositionJan 07, 2020

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application CurrentlySection 8 AcceptedTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 007Machines, machine tools & power-operated tools

US codes: 013, 019, 021, 023, 031, 034, 035

First use anywhere: Apr 11, 2019

First use in commerce: Apr 11, 2019

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

20 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Apr 06, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (6-YR) ACCEPTED

Apr 06, 2026

REGISTERED - SEC. 8 (6-YR) ACCEPTED

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

Apr 06, 2026

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

TEAS SECTION 8 RECEIVED

Nov 18, 2025

TEAS SECTION 8 RECEIVED

AMENDMENT CORRESPONDENCE ENTERED

Feb 28, 2023

AMENDMENT CORRESPONDENCE ENTERED

REGISTERED-PRINCIPAL REGISTER

Mar 24, 2020

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Jan 07, 2020

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jan 07, 2020

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Dec 18, 2019

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO LIE

Dec 04, 2019

ASSIGNED TO LIE

APPROVED FOR PUB - PRINCIPAL REGISTER

Dec 02, 2019

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS/EMAIL CORRESPONDENCE ENTERED

Nov 30, 2019

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Nov 29, 2019

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Nov 29, 2019

CORRESPONDENCE RECEIVED IN LAW OFFICE

NON-FINAL ACTION WRITTEN

Jun 30, 2019

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jun 30, 2019

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jun 30, 2019

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Jun 25, 2019

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

May 03, 2019

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Apr 19, 2019

NEW APPLICATION ENTERED

Other Marks by Chen Yikai

Additional USPTO filings from the same owner.

LOT

LOTIN

88388601

Chen Yikai

REGISTERED

ILO

ILOSCIE

97745443

Chen, Yikai

REGISTERED

FUT

FUTURIOL

97538002

CHEN Yikai

REGISTERED

SUI

SUIYUE

97031283

Chen, Yikai

REGISTERED

Other Marks by Joseph Militello

Additional USPTO filings handled by the same attorney of record.

MEL

MELONTIME

98848287

REGISTERED

KIT

KITCOM

88826210

REGISTERED

TEN

TEN MIRO

90012046

REGISTERED

DRP

DRPERFECT

90012054

REGISTERED

COSIN

Run a conflict check

Other Marks by Chen Yikai

Other Marks by Joseph Militello

Get pre-filing clearance

Search 15M+ trademarks

Resources

Company