Who owns the NEFXTEND trademark?

The NEFXTEND trademark is owned by Calliditas Therapeutics AB.

What class is the NEFXTEND trademark registered in?

The NEFXTEND trademark is registered in Class 042 (Scientific, technology & SaaS services), Class 044 (Medical, veterinary & beauty care services).

What is the serial number for NEFXTEND?

The USPTO serial number for NEFXTEND is 98716551.

What is the registration number for NEFXTEND?

NEFXTEND is registered under USPTO registration number 8446267.

NEFXTEND - Owned by Calliditas Therapeutics AB - (Class 042, Class 044)

What to file next

Section 8 declaration of continued use

When: Due between the fifth and sixth anniversary of registration.
Extensions and grace: A six-month grace period follows, with an added per-class fee.
If it is missed: A missed Section 8 cancels the registration, and there is no revival route for it.

How the Section 8 deadline works

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 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.

Class 044Medical, veterinary & beauty care services

US codes: 100, 101

Medical services; veterinary services; hygienic and beauty care for human beings or animals; agriculture, aquaculture, horticulture and forestry services.

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

Filing Basis & Declarations

Standard Characters Claimed

Status History

34 events

REGISTERED-PRINCIPAL REGISTER

Sep 22, 2026

Code R.PR

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Sep 22, 2026

Code NRCC

PUBLISHED FOR OPPOSITION

Aug 04, 2026

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Aug 04, 2026

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jul 29, 2026

Code NONP

ASSIGNED TO PETITION STAFF

Jul 07, 2026

Code APET

PETITION TO DIRECTOR - CHANGE BASIS - GRANTED

Jul 07, 2026

Code PCBG

JURISDICTION RESTORED TO EXAMINING ATTORNEY

Jul 07, 2026

Code JURT

NOTICE OF ALLOWANCE CANCELLED

Jul 07, 2026

Code IUCN

CASE RETURNED TO EXAMINATION

Jul 07, 2026

Code OTHE

TEAS PETITION TO AMEND BASIS RECEIVED

May 19, 2026

Code TPAD

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Mar 04, 2026

Code EXRA

SOU TEAS EXTENSION RECEIVED

Mar 03, 2026

Code EEXT

SOU EXTENSION 1 FILED

Mar 03, 2026

Code EXT1

SOU EXTENSION 1 GRANTED

Mar 03, 2026

Code EX1G

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Sep 09, 2025

Code NOAM

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

Aug 07, 2025

Code REAP

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 07, 2025

Code ARAA

TEAS CHANGE OF DOMESTIC REPRESENTATIVES ADDRESS

Aug 07, 2025

Code ECDR

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 07, 2025

Code TCCA

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Aug 07, 2025

Code EWAF

PUBLISHED FOR OPPOSITION

Jul 15, 2025

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jul 15, 2025

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jul 09, 2025

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Jun 11, 2025

Code CNSA

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jun 04, 2025

Code TROA

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jun 04, 2025

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Jun 04, 2025

Code TEME

NON-FINAL ACTION WRITTEN

Mar 09, 2025

Code CNRT

NON-FINAL ACTION E-MAILED

Mar 09, 2025

Code GNRT

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 09, 2025

Code GNRN

ASSIGNED TO EXAMINER

Feb 28, 2025

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jan 17, 2025

Code NWOS

NEW APPLICATION ENTERED

Aug 26, 2024

Code NWAP

Other Marks by Calliditas Therapeutics AB

Additional USPTO filings from the same owner.

NEF

NEFECON

99150566

Calliditas Therapeutics AB

REGISTERED

LOG

LogoMark

79366711

Calliditas Therapeutics AB

REGISTERED

IGA

IGANEXUS

79382485

Calliditas Therapeutics AB

REGISTERED

TAR

TARPEYO TOUCHPOINTS

90775339

Calliditas Therapeutics AB

REGISTERED

Other Marks by Alexandra Kochian

Additional USPTO filings handled by the same attorney of record.

THE

THE ORIGINAL JEANBAR FRED SEGAL

97266302

REGISTERED

MYC

MY CHILD MATTERS

86674493

REGISTERED

CLI

CLIMATE LAB

88311051

REGISTERED

AMU

AMUNIX

86395976

REGISTERED

NEFXTEND

What to file next

Full Goods & Services

Filing Basis & Declarations

Other Marks by Calliditas Therapeutics AB

Other Marks by Alexandra Kochian

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