USPTO trademark

NEFECON

RegisteredUSPTOWord markClass 5

"NEFECON" is a word mark owned by Calliditas Therapeutics AB, filed at the USPTO on April 23, 2025. It is registered and covers class 5 (Pharmaceuticals).

View Calliditas Therapeutics AB portfolio Get this data via the API

Data current as of December 2, 2025Official USPTO record

As filed with the USPTO

Status: Registered; Since December 2, 2025
Filed: April 23, 2025
Registered: December 2, 2025
Expires: Not recorded
Application no.: 99150566
Registration no.: 8050615
Office: USPTO; United States Patent and Trademark Office
Mark type: Word mark; 1 class

Ownership

Who owns NEFECON

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

Owner

Calliditas Therapeutics AB

Stockholm, Sweden

24 trademarks in the portfolioView company

Representative

Matthew L. Frisbee

Leason Ellis LLP

Goods and services

What the mark covers

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

05Class 5 · Pharmaceuticals
Pharmaceutical preparations for the treatment of kidney diseases; Pharmaceutical preparations for the treatment of liver diseases and immune system diseases

History

What has happened so far

Steps recorded by the USPTO, newest first.

December 2, 2025Notice of registration confirmation emailed
December 2, 2025Registered-principal register
October 14, 2025Official gazette publication confirmation e-mailed
October 14, 2025Published for opposition
October 8, 2025Notification of notice of publication e-mailed
September 18, 2025Approved for pub - principal register
September 15, 2025Assigned to examiner
June 17, 2025Teas change of correspondence received
June 17, 2025Attorney/dom.rep.revoked and/or appointed
June 17, 2025Teas revoke/app/change addr of atty/dom rep received

3 earlier steps on the official record.

FAQ

About NEFECON

Who owns the trademark "NEFECON"?

The USPTO trademark "NEFECON" (application 99150566) is owned by Calliditas Therapeutics AB.

What is the status of "NEFECON"?

Its status at the USPTO is: registered.

When was "NEFECON" registered?

It was registered on December 2, 2025.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull NEFECON 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 key View docs

GET /v1/trademarks/{id}

ID=tm_019d2ab5-20cf-73ee-ab1f-5e97ef86ae0b
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "tm_019d2ab5-20cf-73ee-ab1f-5e97ef86ae0b",
  "object": "trademark",
  "mark_text": "NEFECON",
  "status": {
    "primary": "active",
    "stage": "registered"
  },
  "office_code": "US",
  "application_number": "99150566",
  "filing_date": "2025-04-23",
  "nice_classes": [
    5
  ],
  "owners": [
    {
      "name": "Calliditas Therapeutics AB",
      "entity_id": "ent_019eb70c-8c39-70fa-9250-eb1d614846cb"
    }
  ]
}