USPTO trademark

ESN

Under examinationUSPTOWord markClass 1

"ESN" is a word mark owned by Nanoborne LLC, filed at the USPTO on October 17, 2025. It is under examination and covers class 1 (Chemicals).

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Official USPTO record
ESN trademark as filed
As filed with the USPTO
Status
Under examination
Since June 11, 2026
Filed
October 17, 2025
Registered
Not yet
Expires
Not recorded
Application no.
99448618
Registration no.
Not yet
Office
USPTO
United States Patent and Trademark Office
Mark type
Word mark
1 class
Ownership

Who owns ESN

The owner and representative on file with the office.

Owner

Nanoborne LLC

Austin, United States

Representative

Kenneth A. Knox

Perilla Knox & Hildebrandt LLP

Goods and services

What the mark covers

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

  • Chemical fracturing fluids for use in the oil and gas industry; Chemical additives for fracturing fluid for use in oil and gas wells; Chemicals used in oil and gas well stimulation; Chemicals for use in oil and gas well fracturing; Specialty chemicals, namely, chemical additives for general industrial use in the manufacture of a wide variety of goods; Chemical thickeners for use in the manufacture of emulsions for use in geosystems, mining and petroleum exploration and production industries; Chemicals used in oil drilling; Drilling muds for use in oil well drilling; Chemical additives for oil well drilling fluids

History

What has happened so far

Steps recorded by the USPTO, newest first.

  1. Teas/email correspondence entered
  2. Correspondence received in law office
  3. Teas response to office action received
  4. Notification of non-final action e-mailed
  5. Non-final action e-mailed
  6. Non-final action written
  7. Assigned to examiner
  8. New application office supplied data entered
  9. Application filing receipt mailed
  10. New application entered
FAQ

About ESN

Who owns the trademark "ESN"?

The USPTO trademark "ESN" (application 99448618) is owned by Nanoborne LLC.

What is the status of "ESN"?

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 ESN 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_019d2b47-c10c-708f-8b58-d6211b3c2a92
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "tm_019d2b47-c10c-708f-8b58-d6211b3c2a92",
  "object": "trademark",
  "mark_text": "ESN",
  "status": {
    "primary": "pending",
    "stage": "examining"
  },
  "office_code": "US",
  "application_number": "99448618",
  "filing_date": "2025-10-17",
  "nice_classes": [
    1
  ],
  "owners": [
    {
      "name": "Nanoborne LLC",
      "entity_id": null
    }
  ]
}