USPTO trademark

QUEST DIAGNOSTICS

RegisteredUSPTOWord and designClass 42

"QUEST DIAGNOSTICS" is a word and design mark owned by Corning Clinical Laboratories Inc., filed at the USPTO on November 7, 1996. It is registered and covers class 42 (Computer and Scientific Services).

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Data current as of January 11, 2026Official USPTO record

As filed with the USPTO

Status: Registered; Since August 5, 2020
Filed: November 7, 1996
Registered: June 6, 2000
Expires: Not recorded
Application no.: 75978978
Registration no.: 2356304
Office: USPTO; United States Patent and Trademark Office
Mark type: Word and design; 1 class

Ownership

Who owns QUEST DIAGNOSTICS

The owner and representative on file with the office.

Owner

Corning Clinical Laboratories Inc.

Teterboro, United States

Representative

Karen C. Kline

Duane Morris LLP

Goods and services

What the mark covers

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

42Class 42 · Computer and Scientific Services
clinical testing information services for the diagnosis, monitoring and treatment of disease

History

What has happened so far

Steps recorded by the USPTO, newest first.

January 9, 2026Teas change of correspondence received
January 9, 2026Attorney/dom.rep.revoked and/or appointed
January 9, 2026Teas revoke/app/change addr of atty/dom rep received
January 9, 2026Applicant/correspondence changes (non-responsive) entered
January 9, 2026Teas change of owner address received
August 5, 2020Notice of acceptance of sec. 8 & 9 - e-mailed
August 5, 2020Registered and renewed (second renewal - 10 yrs)
August 5, 2020Registered - sec. 8 (10-yr) accepted/sec. 9 granted
August 5, 2020Case assigned to post registration paralegal
June 8, 2020Teas section 8 & 9 received

10 earlier steps on the official record.

Disputes

Oppositions and cancellations

Proceedings recorded against this mark by the USPTO. Reported as recorded, not legal advice.

FAQ

About QUEST DIAGNOSTICS

Who owns the trademark "QUEST DIAGNOSTICS"?

The USPTO trademark "QUEST DIAGNOSTICS" (application 75978978) is owned by Corning Clinical Laboratories Inc.

What is the status of "QUEST DIAGNOSTICS"?

Its status at the USPTO is: registered.

When was "QUEST DIAGNOSTICS" registered?

It was registered on June 6, 2000.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull QUEST DIAGNOSTICS 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_019d1dba-1847-76bf-aa4e-ef8c53e5c8ec
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "tm_019d1dba-1847-76bf-aa4e-ef8c53e5c8ec",
  "object": "trademark",
  "mark_text": "QUEST DIAGNOSTICS",
  "status": {
    "primary": "active",
    "stage": "registered"
  },
  "office_code": "US",
  "application_number": "75978978",
  "filing_date": "1996-11-07",
  "nice_classes": [
    42
  ],
  "owners": [
    {
      "name": "CORNING CLINICAL LABORATORIES INC.",
      "entity_id": null
    }
  ]
}