USPTO trademark

SILFEX

Under examinationUSPTOWord markClass 7

"SILFEX" is a word mark owned by Lam Research Corporation, filed at the USPTO on March 19, 2026. It is under examination and covers class 7 (Machines and Machine Tools).

View Lam Research Corporation portfolioGet this data via the API
Official USPTO record
SILFEX trademark as filed
As filed with the USPTO
Status
Under examination
Since August 31, 2026
Filed
March 19, 2026
Registered
Not yet
Expires
Not recorded
Application no.
99713175
Registration no.
Not yet
Office
USPTO
United States Patent and Trademark Office
Mark type
Word mark
1 class
Ownership

Who owns SILFEX

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

Owner

Lam Research Corporation

LRCX · Fremont, United States

372 trademarks in the portfolioView company

Representative

Duy Thai

Gamma Law

Goods and services

What the mark covers

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

  • Integral components of equipment for the manufacture, processing, and fabrication of semiconductors; Integral components of equipment for the manufacture, processing, and fabrication of semiconductors, namely, c-shroud rings, slotted rings, edge rings, mechanisms for sealing; Replacement parts for integral components of equipment for the manufacture, processing, and fabrication of semiconductors; Replacement parts for integral components of equipment for the manufacture, processing, and fabrication of semiconductors, namely, c-shroud rings, slotted rings, edge rings, and mechanisms for sealing

History

What has happened so far

Steps recorded by the USPTO, newest first.

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

3 earlier steps on the official record.

FAQ

About SILFEX

Who owns the trademark "SILFEX"?

The USPTO trademark "SILFEX" (application 99713175) is owned by Lam Research Corporation.

What is the status of "SILFEX"?

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 SILFEX 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_019d3f24-69e1-7142-b2cc-0b28cf800a58
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "tm_019d3f24-69e1-7142-b2cc-0b28cf800a58",
  "object": "trademark",
  "mark_text": "SILFEX",
  "status": {
    "primary": "pending",
    "stage": "examining"
  },
  "office_code": "US",
  "application_number": "99713175",
  "filing_date": "2026-03-19",
  "nice_classes": [
    7
  ],
  "owners": [
    {
      "name": "Lam Research Corporation",
      "entity_id": "ent_019f1c88-c1a6-70ca-85c2-3b1134bb656a"
    }
  ]
}