Who owns the SIONNA trademark?

The SIONNA trademark is owned by Sionna Therapeutics, Inc..

What is the serial number for SIONNA?

The USPTO serial number for SIONNA is 99327824.

What is the registration number for SIONNA?

SIONNA is registered under USPTO registration number 0.

SIONNA - Owned by Sionna Therapeutics, Inc. - (Class 005, Class 042)

Q: What class is the SIONNA trademark registered in?

The SIONNA trademark is registered in Class 005 (Pharmaceuticals, medical & veterinary preparations), Class 042 (Scientific, technology & SaaS services).

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 005Pharmaceuticals, medical & veterinary preparations

US codes: 005, 006, 018, 044, 046, 051, 052

Pharmaceuticals, medical and veterinary preparations; sanitary preparations for medical purposes; dietetic food and substances adapted for medical or veterinary purposes, food for babies; dietary supplements for human beings and animals; adhesive plasters, materials for dressings; material for filling teeth, dental wax; disinfectants; preparations for destroying vermin; fungicides, herbicides.

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

International Filings

Madrid Protocol1 filings

This mark has 1 Madrid Protocol filing on record with the USPTO.

1895009

480Sep 08, 2025

Source: USPTO Madrid International Filing Requests

Status History

17 events

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Sep 22, 2026

Code NOAM

PUBLISHED FOR OPPOSITION

Jul 28, 2026

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jul 28, 2026

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jul 22, 2026

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Jun 25, 2026

Code CNSA

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jun 23, 2026

Code TROA

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jun 23, 2026

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Jun 23, 2026

Code TEME

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

Mar 23, 2026

Code XELR

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

Mar 23, 2026

Code XELG

NON-FINAL ACTION WRITTEN

Dec 23, 2025

Code CNRT

NON-FINAL ACTION E-MAILED

Dec 23, 2025

Code GNRT

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Dec 23, 2025

Code GNRN

ASSIGNED TO EXAMINER

Dec 22, 2025

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Dec 19, 2025

Code NWOS

NEW APPLICATION ENTERED

Aug 08, 2025

Code NWAP

APPLICATION FILING RECEIPT MAILED

Aug 08, 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 Sionna Therapeutics, Inc.

Additional USPTO filings from the same owner.

SIO

SIONNA THERAPEUTICS

90833921

SIONNA THERAPEUTICS, INC.

REGISTERED

SIO

SIONNA THERAPEUTICS

99327839

Sionna Therapeutics, Inc.

PENDING

SIO

SION

99327850

Sionna Therapeutics, Inc.

PENDING

Other Marks in Class 005 — Pharmaceuticals, medical & veterinary preparations

Recently filed and registered marks in the same international class.

SIO

SIONNA THERAPEUTICS

90833921

SIONNA THERAPEUTICS, INC.

REGISTERED

SIO

SIONNA THERAPEUTICS

99327839

Sionna Therapeutics, Inc.

PENDING

Other Marks by Keith Toms, Esq.

Additional USPTO filings handled by the same attorney of record.

ITA

ITA KEEPING SPORT REAL

79268179

REGISTERED

REF

REFUGEE OLYMPIC TEAM

79415045

REGISTERED

OLY

OLYMPIC ESPORT GAMES

79418769

REGISTERED

OMI

OMICS-GUARD

98854053

REGISTERED

SIONNA

What to file next

Full Goods & Services

Filing Basis & Declarations

International Filings

What usually happens from here

Other Marks by Sionna Therapeutics, Inc.

Other Marks in Class 005 — Pharmaceuticals, medical & veterinary preparations

Other Marks by Keith Toms, Esq.

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