USPTO trademark

FELKYO

Under examinationUSPTOWord markClass 5

"FELKYO" is a word mark owned by Biogen MA Inc., filed at the USPTO on October 15, 2026. It is under examination and covers class 5 (Pharmaceuticals).

View Biogen MA Inc. portfolioGet this data via the API
Official USPTO record
FELKYO trademark as filed
As filed with the USPTO
Status
Under examination
Since October 15, 2026
Filed
October 15, 2026
Registered
Not yet
Expires
Not recorded
Application no.
50163788
Registration no.
Not yet
Office
USPTO
United States Patent and Trademark Office
Mark type
Word mark
1 class
Ownership

Who owns FELKYO

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

Owner

Biogen MA Inc.

BIIB · Cambridge, United States

485 trademarks in the portfolioView company

Representative

Douglas A. Rettew

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Goods and services

What the mark covers

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

  • Pharmaceutical preparations for the treatment and prevention of kidney diseases and disorders; Pharmaceutical preparations for the treatment of immune system diseases and disorders; Pharmaceutical preparations for the treatment of autoimmune diseases and disorders; Pharmaceutical preparations for the prevention of organ transplant rejection

History

What has happened so far

Steps recorded by the USPTO, newest first.

  1. Application filing receipt mailed
  2. New application office supplied data entered
  3. New application entered
FAQ

About FELKYO

Who owns the trademark "FELKYO"?

The USPTO trademark "FELKYO" (application 50163788) is owned by Biogen MA Inc.

What is the status of "FELKYO"?

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 FELKYO 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_01a144d0-acd4-711d-a20a-93c1b702b392
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "tm_01a144d0-acd4-711d-a20a-93c1b702b392",
  "object": "trademark",
  "mark_text": "FELKYO",
  "status": {
    "primary": "pending",
    "stage": "examining"
  },
  "office_code": "US",
  "application_number": "50163788",
  "filing_date": "2026-10-15",
  "nice_classes": [
    5
  ],
  "owners": [
    {
      "name": "Biogen MA Inc.",
      "entity_id": "ent_019f2860-1a78-772b-8ec5-0db11609e513"
    }
  ]
}