USPTO trademark

CSL

Under examinationUSPTOWord and designClass 35Class 41Class 42Class 44

"CSL" is a word and design mark owned by CSL Limited, filed at the USPTO on September 16, 2026. It is under examination and covers classes 35, 41, 42 and 44.

Get this data via the API
Official USPTO record
CSL trademark as filed
As filed with the USPTO
Status
Under examination
Since September 16, 2026
Filed
September 16, 2026
Registered
Not yet
Expires
Not recorded
Application no.
50111023
Registration no.
Not yet
Office
USPTO
United States Patent and Trademark Office
Mark type
Word and design
4 classes
Ownership

Who owns CSL

The owner and representative on file with the office.

Owner

CSL Limited

Melbourne, Australia

Representative

Scott Woldow

Smith, Gambrell & Russell, LLP

Goods and services

What the mark covers

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

History

What has happened so far

Steps recorded by the USPTO, newest first.

  1. Application filing receipt mailed
  2. New application entered
FAQ

About CSL

Who owns the trademark "CSL"?

The USPTO trademark "CSL" (application 50111023) is owned by CSL Limited.

What is the status of "CSL"?

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 CSL 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_01a0af7e-eaa6-7579-8e27-7809d4f10427
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "tm_01a0af7e-eaa6-7579-8e27-7809d4f10427",
  "object": "trademark",
  "mark_text": "CSL",
  "status": {
    "primary": "pending",
    "stage": "examining"
  },
  "office_code": "US",
  "application_number": "50111023",
  "filing_date": "2026-09-16",
  "nice_classes": [
    35,
    41,
    42,
    44
  ],
  "owners": [
    {
      "name": "CSL Limited",
      "entity_id": null
    }
  ]
}