USPTO trademark

XILIO THERAPEUTICS

RegisteredUSPTOWord markClass 5

"XILIO THERAPEUTICS" is a word mark owned by Xilio Development, Inc., filed at the USPTO on January 16, 2026. It is registered and covers class 5 (Pharmaceuticals).

Get this data via the API

Data current as of August 4, 2026Official USPTO record

As filed with the USPTO

Status: Registered; Since August 4, 2026
Filed: January 16, 2026
Registered: August 4, 2026
Expires: Not recorded
Application no.: 99598865
Registration no.: 8377754
Office: USPTO; United States Patent and Trademark Office
Mark type: Word mark; 1 class

Ownership

Who owns XILIO THERAPEUTICS

The owner and representative on file with the office.

Owner

Xilio Development, Inc.

Waltham, United States

Representative

Valerie Brennan

Plave Koch PLC

Goods and services

What the mark covers

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

05Class 5 · Pharmaceuticals
Pharmaceutical products for the treatment of cancer, all of the foregoing excluding pharmaceutical products for sleep disorders, central nervous disorders other than cancers of the central nervous system, and neurological disorders other than cancers of the neurological system

History

What has happened so far

Steps recorded by the USPTO, newest first.

August 4, 2026Notice of registration confirmation emailed
August 4, 2026Registered-principal register
June 16, 2026Official gazette publication confirmation e-mailed
June 16, 2026Published for opposition
June 10, 2026Notification of notice of publication e-mailed
May 18, 2026Notification of examiners amendment e-mailed
May 18, 2026Approved for pub - principal register
May 18, 2026Examiner's amendment entered
May 18, 2026Examiners amendment e-mailed
May 18, 2026Examiners amendment -written

4 earlier steps on the official record.

FAQ

About XILIO THERAPEUTICS

Who owns the trademark "XILIO THERAPEUTICS"?

The USPTO trademark "XILIO THERAPEUTICS" (application 99598865) is owned by Xilio Development, Inc.

What is the status of "XILIO THERAPEUTICS"?

Its status at the USPTO is: registered.

When was "XILIO THERAPEUTICS" registered?

It was registered on August 4, 2026.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull XILIO THERAPEUTICS 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_019d2b8c-944c-7182-8315-f130771ecb67
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "tm_019d2b8c-944c-7182-8315-f130771ecb67",
  "object": "trademark",
  "mark_text": "XILIO THERAPEUTICS",
  "status": {
    "primary": "active",
    "stage": "registered"
  },
  "office_code": "US",
  "application_number": "99598865",
  "filing_date": "2026-01-16",
  "nice_classes": [
    5
  ],
  "owners": [
    {
      "name": "XILIO DEVELOPMENT, INC.",
      "entity_id": null
    }
  ]
}