Who owns the INKSTONE trademark?

The INKSTONE trademark is owned by Kentauros AI Inc..

What is the serial number for INKSTONE?

The USPTO serial number for INKSTONE is 99514936.

What is the registration number for INKSTONE?

INKSTONE is registered under USPTO registration number 0.

INK

INKSTONE

Q: What class is the INKSTONE trademark registered in?

The INKSTONE trademark is registered in Class 009 (Electronics, software & scientific instruments), Class 042 (Scientific, technology & SaaS services).

PENDING

Serial: 99514936
Reg: 0
Filed: Nov 25, 2025
Owner: Kentauros AI Inc.

Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable multimedia files, computer software, blank digital or analogue recording and storage media; mechanisms for coin-operated apparatus; cash registers, calculating devices; computers and computer peripheral devices; diving suits, divers' masks, ear plugs for divers, nose clips for divers, gloves for divers, breathing apparatus for underwater swimming; fire-extinguishing apparatus.; 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

Statement of Use, or a request for a further extension

When: Due six months from the notice of allowance.
Extensions and grace: Five six-month extensions are available, giving a thirty-six-month ceiling from the notice of allowance. There is no extension beyond it.
If it is missed: The application goes abandoned. A petition to revive runs two months from the notice of abandonment.

Statement of Use 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 009Electronics, software & scientific instruments

US codes: 021, 023, 026, 036, 038

Class 042Scientific, technology & SaaS services

US codes: 100, 101

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

Standard Characters ClaimedTrademark

Status History

9 events

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Jun 30, 2026

Code NOAM

PUBLISHED FOR OPPOSITION

May 05, 2026

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

May 05, 2026

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Apr 29, 2026

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 06, 2026

Code CNSA

ASSIGNED TO EXAMINER

Mar 30, 2026

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Feb 12, 2026

Code NWOS

NEW APPLICATION ENTERED

Nov 25, 2025

Code NWAP

APPLICATION FILING RECEIPT MAILED

Nov 25, 2025

Code MAFR

What usually happens from here

Of the 52,488 marks on the USPTO register that reached noa e-mailed - sou required from applicant:

Registered33% (17,296)

Abandoned56% (29,463)

Still pending11% (5,729)

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.

Other Marks by Kentauros AI Inc.

Additional USPTO filings from the same owner.

AGE

AGENTSEA

98481432

Kentauros AI Inc.

PENDING

NAU

NAUTILO

50072664

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PENDING

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Additional USPTO filings handled by the same attorney of record.

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INKSTONE

What to file next

Full Goods & Services

Filing Basis & Declarations

What usually happens from here

Other Marks by Kentauros AI Inc.

Other Marks in Class 009 — Electronics, software & scientific instruments

Other Marks by Matthew P. Hintz

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