USPTO trademark

STABLE KEY

RegisteredUSPTOWord markClass 42

"STABLE KEY" is a word mark owned by T Stamp Inc., filed at the USPTO on March 23, 2025. It is registered and covers class 42 (Computer and Scientific Services).

View T Stamp Inc. portfolio Get this data via the API

Data current as of September 22, 2026Official USPTO record

As filed with the USPTO

Status: Registered; Since September 22, 2026
Filed: March 23, 2025
Registered: September 22, 2026
Expires: Not recorded
Application no.: 99098939
Registration no.: 8446453
Office: USPTO; United States Patent and Trademark Office
Mark type: Word mark; 1 class

Ownership

Who owns STABLE KEY

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

Owner

T Stamp Inc.

IDAI · Atlanta, United States

30 trademarks in the portfolioView company

Representative

Daniel E. Sineway

Bradley Arant Boult Cummings LLP

Goods and services

What the mark covers

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

42Class 42 · Computer and Scientific Services
Providing user authentication services using biometric hardware and software technology for ownership of digital assets and access to digital accounts

History

What has happened so far

Steps recorded by the USPTO, newest first.

September 22, 2026Notice of registration confirmation emailed
September 22, 2026Registered-principal register
August 4, 2026Official gazette publication confirmation e-mailed
August 4, 2026Published for opposition
July 29, 2026Notification of notice of publication e-mailed
July 8, 2026Approved for pub - principal register
June 5, 2026Teas/email correspondence entered
June 5, 2026Correspondence received in law office
June 5, 2026Teas response to office action received
March 12, 2026Notification of non-final action e-mailed

10 earlier steps on the official record.

FAQ

About STABLE KEY

Who owns the trademark "STABLE KEY"?

The USPTO trademark "STABLE KEY" (application 99098939) is owned by T Stamp Inc.

What is the status of "STABLE KEY"?

Its status at the USPTO is: registered.

When was "STABLE KEY" registered?

It was registered on September 22, 2026.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull STABLE KEY 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_019d2a96-4278-738c-b125-d2fe6ead1c1e
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "tm_019d2a96-4278-738c-b125-d2fe6ead1c1e",
  "object": "trademark",
  "mark_text": "STABLE KEY",
  "status": {
    "primary": "active",
    "stage": "registered"
  },
  "office_code": "US",
  "application_number": "99098939",
  "filing_date": "2025-03-23",
  "nice_classes": [
    42
  ],
  "owners": [
    {
      "name": "T Stamp Inc.",
      "entity_id": "ent_019eb70b-f09f-778b-b25f-8018b6bbd859"
    }
  ]
}