USPTO trademark

WONFREXO

Under examinationUSPTOWord markClass 5

"WONFREXO" is a word mark owned by Sanofi, filed at the USPTO on April 8, 2026. It is under examination and covers class 5 (Pharmaceuticals).

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Official USPTO record
WONFREXO trademark as filed
As filed with the USPTO
Status
Under examination
Since June 10, 2026
Filed
April 8, 2026
Registered
Not yet
Expires
Not recorded
Application no.
99750828
Registration no.
Not yet
Office
USPTO
United States Patent and Trademark Office
Mark type
Word mark
1 class
Ownership

Who owns WONFREXO

The owner on file, matched to the company behind it. Every owner-name spelling for that company is grouped on its page.

Owner

Sanofi

Paris, France

3,998 trademarks in the portfolioView company

Representative

Alexandra Kochian

Fross Zelnick Lehrman & Zissu, P.C.

Goods and services

What the mark covers

The products and services WONFREXO is filed for, grouped by Nice class.

  • Pharmaceutical preparations for the treatment and prevention of autoimmune, immune-mediated, inflammatory and immunological diseases and disorders; Pharmaceutical preparations for the treatment and prevention of diseases and disorders of the central nervous system; Pharmaceutical preparations for the treatment and prevention of rare autoimmune, immune-mediated, inflammatory, immunological, central nervous system and neurological diseases and disorders

History

What has happened so far

Steps recorded by the USPTO, newest first.

  1. Teas/email correspondence entered
  2. Correspondence received in law office
  3. Teas response to suspension inquiry received
  4. Notification of letter of suspension e-mailed
  5. Letter of suspension e-mailed
  6. Suspension letter written
  7. Assigned to examiner
  8. Application filing receipt mailed
  9. New application office supplied data entered
  10. New application entered
FAQ

About WONFREXO

Who owns the trademark "WONFREXO"?

The USPTO trademark "WONFREXO" (application 99750828) is owned by Sanofi.

What is the status of "WONFREXO"?

Its status at the USPTO is: under examination.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull WONFREXO and marks like it into your own product with one request.

  • GET/v1/trademarks/{id}

    The full record: owners, classes, dates and images

  • GET/v1/trademarks/{id}/events

    Every step in the office history

  • GET/v1/proceedings?trademark_id={id}

    Oppositions and cancellations against the mark

Get API keyView docs
GET /v1/trademarks/{id}
ID=tm_019d7a2e-9087-7387-8f26-9ec0752051fc
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "tm_019d7a2e-9087-7387-8f26-9ec0752051fc",
  "object": "trademark",
  "mark_text": "WONFREXO",
  "status": {
    "primary": "pending",
    "stage": "examining"
  },
  "office_code": "US",
  "application_number": "99750828",
  "filing_date": "2026-04-08",
  "nice_classes": [
    5
  ],
  "owners": [
    {
      "name": "Sanofi",
      "entity_id": "ent_019eb6f6-62f9-773d-a835-46d137e82556"
    }
  ]
}