USPTO trademark

PHIO

RegisteredUSPTOWord markClass 38

"PHIO" is a word mark owned by QuantumXchange Inc., filed at the USPTO on September 5, 2018. It is registered and covers class 38 (Telecommunications).

Get this data via the API

Data current as of July 16, 2025Official USPTO record

As filed with the USPTO

Status: Registered; Since July 16, 2025
Filed: September 5, 2018
Registered: December 10, 2019
Expires: Not recorded
Application no.: 88105676
Registration no.: 5933364
Office: USPTO; United States Patent and Trademark Office
Mark type: Word mark; 1 class

Ownership

Who owns PHIO

The owner and representative on file with the office.

Owner

QuantumXchange Inc.

Bethesda, United States

Representative

Keith E. Gilman

Lerner David LLP

Goods and services

What the mark covers

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

38Class 38 · Telecommunications
communications by fiber optic networks; transmission and receiving quantum cryptographic keys by fiber optic network

History

What has happened so far

Steps recorded by the USPTO, newest first.

July 16, 2025Notice of acceptance of sec. 8 & 15 - e-mailed
July 16, 2025Registered - sec. 8 (6-yr) accepted & sec. 15 ack.
July 16, 2025Case assigned to post registration paralegal
March 17, 2025Teas section 8 & 15 received
February 28, 2025Teas change of correspondence received
February 28, 2025Attorney/dom.rep.revoked and/or appointed
February 28, 2025Teas revoke/app/change addr of atty/dom rep received
February 28, 2025Applicant/correspondence changes (non-responsive) entered
February 28, 2025Teas change of owner address received
December 10, 2024Courtesy reminder - sec. 8 (6-yr) e-mailed

10 earlier steps on the official record.

FAQ

About PHIO

Who owns the trademark "PHIO"?

The USPTO trademark "PHIO" (application 88105676) is owned by QuantumXchange Inc.

What is the status of "PHIO"?

Its status at the USPTO is: registered.

When was "PHIO" registered?

It was registered on December 10, 2019.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull PHIO 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_019d2d2a-b4f7-71e0-8a0f-1b2fddc6fbc4
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "tm_019d2d2a-b4f7-71e0-8a0f-1b2fddc6fbc4",
  "object": "trademark",
  "mark_text": "PHIO",
  "status": {
    "primary": "active",
    "stage": "registered"
  },
  "office_code": "US",
  "application_number": "88105676",
  "filing_date": "2018-09-05",
  "nice_classes": [
    38
  ],
  "owners": [
    {
      "name": "QuantumXchange Inc.",
      "entity_id": null
    }
  ]
}