Who owns the TANDEM trademark?

The TANDEM trademark is owned by Tandem Space, Inc..

What class is the TANDEM trademark registered in?

The TANDEM trademark is registered in Class 036 (Insurance, financial & real estate services), Class 042 (Scientific, technology & SaaS services).

What is the serial number for TANDEM?

The USPTO serial number for TANDEM is 99029959.

What is the registration number for TANDEM?

TANDEM is registered under USPTO registration number 0.

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Updated Nov 4, 2026·41 searches this week

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Office Action response

November 14, 2026

9 days remaining

TAN

TANDEM

PENDING

Serial: 99029959
Reg: 0
Filed: Feb 05, 2025
Owner: Tandem Space, Inc.

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

What to file next

Response to the outstanding office action

When: Three months from the issue date for most applications filed on or after 3 December 2022, extendable once by three months for a fee.
Extensions and grace: A Madrid Section 66(a) application keeps a six-month response period instead, with no extension available.
If it is missed: The application goes abandoned. A petition to revive runs two months from the notice of abandonment, on an unintentional-delay standard.

Office action response deadlines

General information about USPTO practice, not legal advice. The register is the authority, and a filing that has not yet posted can change what is owed.

Full Goods & Services

Class 036Insurance, financial & real estate services

US codes: 100, 101, 102

First use anywhere: Jun 15, 2023

First use in commerce: Jun 15, 2023

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

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Jun 15, 2023

First use in commerce: Jun 15, 2023

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.

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

Filing Basis & Declarations

Filed as Use ApplicationUse Application Currently

Status History

17 events

NON-FINAL ACTION WRITTEN

Aug 14, 2026

Code CNRT

NON-FINAL ACTION E-MAILED

Aug 14, 2026

Code GNRT

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Aug 14, 2026

Code GNRN

SUSPENSION CHECKED - TO ATTORNEY FOR ACTION

Apr 24, 2026

Code RCCK

SUSPENSION LETTER WRITTEN

Oct 21, 2025

Code CNSL

LETTER OF SUSPENSION E-MAILED

Oct 21, 2025

Code GNSL

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

Oct 21, 2025

Code GNS3

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Sep 12, 2025

Code TROA

CORRESPONDENCE RECEIVED IN LAW OFFICE

Sep 12, 2025

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Sep 12, 2025

Code TEME

NON-FINAL ACTION WRITTEN

Jul 22, 2025

Code CNRT

NON-FINAL ACTION E-MAILED

Jul 22, 2025

Code GNRT

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jul 22, 2025

Code GNRN

ASSIGNED TO EXAMINER

Jul 15, 2025

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jul 07, 2025

Code NWOS

NEW APPLICATION ENTERED

Feb 05, 2025

Code NWAP

APPLICATION FILING RECEIPT MAILED

Feb 05, 2025

Code MAFR

What usually happens from here

Of the 104,104 marks on the USPTO register that reached notification of non-final action e-mailed:

Registered31% (32,511)

Abandoned61% (63,524)

Still pending8% (8,069)

Historical frequencies across the whole register, not a prediction about this mark. The outcome of any one application depends on what is filed and when.